NCERT Solutions for Class 1 Maths Chapter 05 How Many

Tell How many Altogether? Fill in the Blanks.

Question 1. 4 children and 2 children altogether make ___ children.
4 + 2 = [ ]
Answer:
4 children and 2 children altogether make 6 children.
4 + 2 = 6
In simple words: When we put four kids and two more kids together, we count six kids in total.

Exam Tip: Use your fingers or draw small stick figures to count the total number of children easily.

Question 2. 3 tops and 1 top altogether make ___ tops.
3 + 1 = [ ]
Answer:
3 tops and 1 top altogether make 4 tops.
3 + 1 = 4
In simple words: Three toys plus one more toy makes four toys altogether.

Exam Tip: "1 more" than any number is simply the next counting number.

Question 3. 3 ants and 2 ants altogether make ___ ants.
3 + 2 = [ ]
Answer:
3 ants and 2 ants altogether make 5 ants.
3 + 2 = 5
In simple words: Three little ants and two more ants make five ants on the ground.

Exam Tip: Point to each ant in the picture with your pencil to count them without making mistakes.

Question 4. 4 pencils and 3 pencils altogether make ___ pencils.
4 + 3 = [ ]
Answer:
4 pencils and 3 pencils altogether make 7 pencils.
4 + 3 = 7
In simple words: Four colorful pencils and three more pencils make seven pencils in total.

Exam Tip: Practice counting aloud from 4, adding 3 more steps: 5, 6, 7.

Question 5. 6 balls and 2 balls altogether make ___ balls.
6 + 2 = [ ]
Answer:
6 balls and 2 balls altogether make 8 balls.
6 + 2 = 8
In simple words: Six playballs and two more playballs give us eight balls in all.

Exam Tip: Start counting from the larger number (6) and then add the smaller number (2) for faster addition.

Question 6. Find the sum: 7 + 1 = [ ]
Answer:
7 + 1 = 8
In simple words: When we add one to seven, we get eight.

Exam Tip: Adding 1 is like taking one step forward on a number line.

Let us Count

Question 7. Fill in the blanks:
A. How many brothers and sisters do your parents have altogether?
B. How many family members do you and your friend have altogether?
C. How many fingers do you have in both your hands and feet?
D. How many numbers can you count on your fingers?
Answer:
A. 2 + 3 = 5 (sample answer)
B. 4 + 6 = 10 (sample answer)
C. 10 + 10 = 20
D. 5 + 5 = 10
In simple words: We count things around us - like family members or our own fingers and toes - and add them together.

Exam Tip: Toes and fingers are great tools! You have 10 fingers on your hands and 10 toes on your feet, making 20 in total.

Count and write the total number of fingers.

Answer: The total number of fingers shown for each pair of hands is calculated in the table above.
In simple words: We count the open fingers on both hands to find the total sums.

Exam Tip: Any number added to 0 remains the same (for example, 4 + 0 = 4).

Let us Play - Addition with Dice!

Question. Take turns and roll two dice together and find the total number of dots on both the dice. Now ask your friend to roll the dice and find the total number of dots. Find out who scores more.

Answer: The scores of the dice game are listed in the table. In this sample game, My Friend scored more in rounds I, II, and IV, while I scored more in round III.
In simple words: We roll two dice, count the tiny dots on both, and add them up to see who gets the bigger score.

Exam Tip: Practice subitizing (recognizing the number of dots on a die instantly without counting them one by one) to add faster.

Let us Count (Kishore vs Nitya)

Question. Kishore and Nitya played a game with dice. Find out how many times Kishore won and how many times Nitya won by putting a tick (✔) on their score board.

Answer: Kishore won 1 round (Round A), and Nitya won 4 rounds (Rounds B, C, D, and E).
In simple words: We added the dots on the two dice for each round. The person with the higher total number won that round.

Exam Tip: Compare the final sums to decide the winner: the larger number always wins.

Question 8. Colour the beads in the string as per the numbers given below and find the total number of coloured beads.
A. 3 + 4 = [ ]
B. 4 + 2 = [ ]
C. 5 + 4 = [ ]
D. 2 + 7 = [ ]
E. 7 + 3 = [ ]
Answer:
A. 3 + 4 = 7
B. 4 + 2 = 6
C. 5 + 4 = 9
D. 2 + 7 = 9
E. 7 + 3 = 10
In simple words: We color the first set of beads with one color and the second set with another, then count all the colored beads to find the answer.

Exam Tip: Color-coding different parts of a sum helps you visualize how two smaller groups combine to make a larger group.

Question 9. Hop and Find the Sum
4 + 2 = [ ]
3 + 2 = [ ]
5 + 3 = [ ]
6 + 3 = [ ]
Answer:
* 4 + 2 = 6
* 3 + 2 = 5
* 5 + 3 = 8
* 6 + 3 = 9
In simple words: We start at the first number on the strip and hop forward by the second number of steps to land on the correct answer.

Exam Tip: Hopping on a number line is a helpful way to practice addition. Always start on the first number and jump forward.

Question 10. Add in Your Own Way - Abdul and Rihana are adding numbers in two different ways. Help them to find the sum.
* 2 + 3 = [ ]
* 5 + 1 = [ ]
* 3 + 3 = [ ]
* 9 + 1 = [ ]
Answer:
Whether we add numbers vertically (one on top of the other) or horizontally (side-by-side), the sum is exactly the same:
* 2 + 3 = 5
* 5 + 1 = 6
* 3 + 3 = 6
* 9 + 1 = 10
In simple words: Adding numbers up-and-down or side-by-side gives the same happy answer!

Exam Tip: Both vertical and horizontal addition are correct methods. Choose the way that feels easiest for you to write.

Let us Do - Spoke Wheels & Matching

Question 11. Fill up the number pairs in the wheels, and add and match the following:
* 1 + 4
* 6 + 3
* 5 + 2
* 0 + 6
Answer:
Number Wheel completed pairs:
* For 8: 7+1, 1+7, 2+6, 3+5, 4+4, 5+3, 6+2
* For 5: 2+3, 1+4, 3+2, 4+1
* For 7: 6+1, 1+6, 5+2, 2+5, 3+4, 4+3
* For 9: 1+8, 3+6, 4+5, 5+4, 8+1, 2+7, 6+3

Matching pairs with the same sum:
* 1 + 4 = 5 = 3 + 2
* 6 + 3 = 9 = 5 + 4
* 5 + 2 = 7 = 3 + 4
* 0 + 6 = 6 = 4 + 2
In simple words: Different pairs of numbers can add up to make the same total. For example, 1 + 4 and 3 + 2 both equal 5.

Exam Tip: Learn "number bonds" to quickly recognize different ways of making the same total sum.

Question 12. Project Work - Take ten cards 0 to 9. Arrange the cards in such a manner that their sum must be 9. There are many ways to do it. In how many ways can you do it?
Answer:
Here are some of the ways to arrange cards from 0 to 9 so that their sum equals 9:
* Using two cards: 8 + 1 = 9 (or 7 + 2 = 9)
* Using three cards: 1 + 5 + 3 = 9 (or 5 + 3 + 1 = 9)
* Using other two-card sets: 3 + 6 = 9 (or 4 + 5 = 9)
In simple words: We can choose different number cards that add up to nine, like 8 and 1, or even three cards like 1, 5, and 3.

Exam Tip: When using three cards, make sure none of the card numbers are repeated in the same addition line.

Question 13. Addition Story
A. Raghav has 4 shells and Sarita has 5 shells. How many shells they have altogether?
B. Ranjeet has 3 marbles and Meenakshi has 6 marbles. How many marbles they have in total?
C. There are 3 coconuts in one bag. There are 4 coconuts in another bag. How many coconuts are there in all?
Answer:
A. 4 shells + 5 shells = 9 shells altogether.
B. 3 marbles + 6 marbles = 9 marbles in total.
C. 3 coconuts + 4 coconuts = 7 coconuts in all.
In simple words: We read the stories, find the numbers, and add them together to solve the real-world problems.

Exam Tip: Words like "altogether", "in total", and "in all" tell us that we need to add the numbers together.

Question 14. Let us see what we have in our bags - Do it with your friend and write down the answers below.
A. I have ___ books in my bag and my friend has ___ books. We both have ___ books in all.
B. I have ___ pencils and my friend has ___ pencils. We have ___ pencils altogether.
C. I have ___ notebooks and my friend has ___ notebooks. We have ___ notebooks in total.
Answer: (Sample answers based on class activity)
A. I have 4 books in my bag and my friend has 5 books. We both have 9 books in all.
B. I have 3 pencils and my friend has 2 pencils. We have 5 pencils altogether.
C. I have 4 notebooks and my friend has 4 notebooks. We have 8 notebooks in total.
In simple words: Count the items in your bag, ask your friend to count theirs, and add both numbers together.

Exam Tip: Use real objects from your desk to practice this counting activity with your partner.

Think and Do

Question 15. Write the numbers 1, 2 and 3 in the given table in a way as shown by the dotted lines so that each way adds up to 6.

Answer: The completed grid above shows how placing numbers 1, 2, and 3 in this pattern makes every row, column, and diagonal add up to exactly 6.
In simple words: We place the numbers so that adding them across, down, or corner-to-corner always equals six.

Exam Tip: Notice that each number (1, 2, and 3) appears exactly once in every row and every column, just like a mini sudoku puzzle!

Question 16. Let us Talk - A. How many children are there in the bus at the beginning? B. How many children get down from the bus on the first stand? C. How many children are left in the bus after the first stop? D. How many children are left after the second stand? Answer the same for third, fourth and fifth stand. E. How many children are left in the bus at the end?
Answer:
A. There are 5 children in the bus at the beginning.
B. 1 child gets down from the bus on the first stand.
C. 4 children are left in the bus after the first stop.
D. 3 children are left after the second stand, 2 children are left after the third stand, 1 child is left after the fourth stand, and 0 children are left after the fifth stand.
E. 0 children are left in the bus at the end.
In simple words: The bus starts with five kids. At every stop, one child gets off, so the number of kids goes down by one until no one is left.

Exam Tip: When we keep taking away exactly 1 from a group, it is called "backward counting" or subtraction by 1.

How Many Left?

Question 17. Fill in the blanks:
i. 6 frogs | 2 jumped away | ___ left. 6 - 2 = ___
ii. 7 balloons | ___ flew away | 5 left. 7 - ___ = 5
iii. 9 bananas | 6 took away | ___ left. 9 - 6 = ___
Answer:
i. 4 left. 6 - 2 = 4
ii. 2 flew away. 7 - 2 = 5
iii. 3 left. 9 - 6 = 3
In simple words: When things go away, fly away, or are eaten, we subtract them to find out how many are left.

Exam Tip: Subtraction is the opposite of addition. We take away from a larger group to get a smaller group.

Question 18. Draw the objects that are being left and fill in the blanks.
i. ___ pots | ___ pot broke | ___ left. 3 - ___ = ___
ii. 7 ladoos | 4 eaten | ___ left. 7 - 4 = ___
iii. 7 balls | ___ took away | ___ left. 7 - ___ = ___
Answer:
i. 3 pots | 1 pot broke | 2 left. 3 - 1 = 2
ii. 7 ladoos | 4 eaten | 3 left. 7 - 4 = 3
iii. 7 balls | 3 took away | 4 left. 7 - 3 = 4
In simple words: We count what we had at first, subtract what was broken or taken, and write the remaining number.

Exam Tip: Use drawing or crossing out items in the picture to help you see the remaining amount easily.

Question 19. Answer the following questions.
i. Manisha has 9 bananas. She ate 3 bananas. How many bananas are left?
ii. There are 8 butterflies on the flowers. 5 butterflies flew away. How many butterflies are left?
Answer:
i. 9 bananas - 3 eaten = 6 bananas are left.
ii. 8 butterflies - 5 flew away = 3 butterflies are left.
In simple words: Eating fruit or having butterflies fly away are subtraction stories. We subtract the smaller number from the bigger one.

Exam Tip: Look for clues like "left" or "flew away" in word problems to know that you must subtract.

Let us Do - Hidden Dots

Question 20. How many dots are hidden and how many dots are visible on your 10-dots card? Complete the table.

Answer: The table above shows how the hidden dots and visible dots on a 10-dot card always add up to exactly 10.
In simple words: Since we have ten dots in total, if some dots are hidden, the rest must be visible. For example, if 3 are hidden, we can see 7.

Exam Tip: You can find the number of hidden dots by subtracting the visible dots from 10 (10 - Visible = Hidden).

Question 21. Hop backwards on the number strip.
A. Jump 3 steps back from 9.
B. Jump 4 steps back from 7.
Answer:
A. 9 - 3 = 6
B. 7 - 4 = 3
In simple words: Start at the first number and take hops backward (towards the left) to find the subtraction answer.

Exam Tip: Hopping backward on a number strip is a simple way to subtract. Jumping left always lowers the number.

Question 22. Do the subtraction in your own way.
A. 8 - 2 = [ ]
B. 7 - 3 = [ ]
C. 9 - 5 = [ ]
D. 6 - 3 = [ ]
E. 5 - 1 = [ ]
F. 4 - 2 = [ ]
Answer:
A. 8 - 2 = 6
B. 7 - 3 = 4
C. 9 - 5 = 4
D. 6 - 3 = 3
E. 5 - 1 = 4
F. 4 - 2 = 2
In simple words: Use your fingers, draw lines and cross them out, or count backward to solve these subtraction sums.

Exam Tip: For small numbers, you can easily use your fingers to count backward and check your subtraction results quickly.