CBSE Class 3 Revision Assignments Set 09

A. Write in figures:

Question 1. Two thousand three hundred and forty nine =
Answer: 2349
In simple words: The number is written by placing the digits in their respective thousands, hundreds, tens, and ones places.

Exam Tip: Always verify that all four place values (Th, H, T, O) are accounted for.

Question 2. Eight thousand and ninety =
Answer: 8090
In simple words: Since there are no hundreds, we put a 0 in the hundreds place.

Exam Tip: Be careful with missing place values like hundreds; use zero as a placeholder.

Question 3. Three thousand four hundred and one =
Answer: 3401
In simple words: There are no tens, so a 0 is placed in the tens column.

Exam Tip: Check every word carefully to avoid missing place value zeros.

Question 4. Five thousand and seven =
Answer: 5007
In simple words: Hundreds and tens places are empty, so we fill them with zeros.

Question 1. 4936 =
Answer: Four thousand nine hundred thirty-six
In simple words: Read each place value from left to right and write its word form.

Exam Tip: Spell out number names correctly without spelling mistakes.

Question 2. 8795 =
Answer: Eight thousand seven hundred ninety-five
In simple words: Break the number into thousands, hundreds, tens, and ones.

Exam Tip: Ensure hyphens are placed correctly between tens and ones digits.

Question 3. 2012 =
Answer: Two thousand twelve
In simple words: Since there are zero hundreds, we skip mentioning the hundreds place.

Exam Tip: Do not write "zero hundred" when reading or writing number names.

Question 4. 6908 =
Answer: Six thousand nine hundred eight
In simple words: The tens place is zero, so we combine the hundreds and ones directly.

Exam Tip: Pay attention to zeros in the middle of a number.

C. Write in expanded form:

Question 1. 7652 =
Answer: 7000 + 600 + 50 + 2
In simple words: Each digit is multiplied by its place value and written as a sum.

Exam Tip: Expanded form represents the value of each digit clearly.

Question 2. 5629 =
Answer: 5000 + 600 + 20 + 9
In simple words: Separate the thousands, hundreds, tens, and ones with plus signs.

Exam Tip: Count the trailing zeros carefully for each place value.

Question 3. 2084 =
Answer: 2000 + 0 + 80 + 4
In simple words: Include 0 for the missing hundreds place, or write 2000 + 80 + 4.

Exam Tip: Writing 0 for empty places makes the place value structure explicit.

Question 4. 3901 =
Answer: 3000 + 900 + 0 + 1
In simple words: The tens place is 0, so we add 0 in the expansion.

Exam Tip: Every digit in the 4-digit number corresponds to a term in the expansion.

D. Write in short form:

Question 1. 6000 + 700 + 0 + 5 =
Answer: 6705
In simple words: Combine all the place value components into a single number.

Exam Tip: Align digits by place value before combining.

Question 2. 3000 + 0 + 40 + 9 =
Answer: 3049
In simple words: Since hundreds is 0, put a 0 in the hundreds place.

Question 3. 4000 + 0 + 0 + 2 =
Answer: 4002
In simple words: Hundreds and tens are zero, resulting in 4002.

Exam Tip: Double-check the number of zeros between the thousands and ones digits.

Question 4. 1000 + 500 + 70 + 4 =
Answer: 1574
In simple words: Standard addition of place values gives 1574.

Exam Tip: Directly extract the leading digits when values are in standard expanded order.

E. Continue the pattern:

Question 1. 4040, 4080, __________, __________, __________
Answer: 4120, 4160, 4200
In simple words: Each number increases by 40.

Exam Tip: Find the difference between the first two terms to determine the rule.

Question 2. 1600, 1500, __________, __________, __________
Answer: 1400, 1300, 1200
In simple words: Each number decreases by 100.

Question 3. 5005, 5010, __________, __________, __________
Answer: 5015, 5020, 5025
In simple words: Each number increases by 5.

Exam Tip: Look at the last digits to quickly spot counting by fives.

Question 4. 8700, 8650, __________, __________, __________
Answer: 8600, 8550, 8500
In simple words: Each number decreases by 50.

Exam Tip: Subtract carefully across hundreds boundaries.

F. Write in ascending order:

Question 1. 8972, 3641, 1590, 6231, 2015
Answer: 1590, 2015, 3641, 6231, 8972
In simple words: Arrange the numbers from smallest to largest by comparing their thousands digits first.

Exam Tip: Compare digits from left to right when thousands are different.

Question 2. 3607, 3076, 3670, 3067, 7306
Answer: 3067, 3076, 3607, 3670, 7306
In simple words: Sort numbers from smallest to largest by checking hundreds and tens when thousands are equal.

Exam Tip: When the leading digits are the same, look at the next digit to the right.

G. Write in descending order:

Question 1. 4823, 4238, 8342, 2384, 3482
Answer: 8342, 4823, 4238, 3482, 2384
In simple words: Arrange the numbers from largest to smallest.

Question 2. 1973, 8241, 6315, 5671, 2005
Answer: 8241, 6315, 5671, 2005, 1973
In simple words: Sort from the largest thousands value to the smallest.

Exam Tip: Check each number carefully to ensure proper ordering from max to min.

H. Make the greatest and smallest 4-digit numbers with the given digits:

Question 1. Form numbers using digits 7, 9, 5, 3
Answer: Greatest: 9753, Smallest: 3579
In simple words: Greatest number is formed by arranging digits in descending order; smallest in ascending order.

Exam Tip: Arrange digits from largest to smallest for greatest, and vice versa for smallest.

Question 2. Form numbers using digits 2, 0, 5, 6
Answer: Greatest: 6520, Smallest: 2056
In simple words: Never put 0 at the beginning of a 4-digit number. For the smallest number, put the next smallest non-zero digit first, then 0.

Exam Tip: A 4-digit number cannot start with 0.

Question 3. Form numbers using digits 8, 1, 4, 9
Answer: Greatest: 9841, Smallest: 1489
In simple words: Descending gives 9841, ascending gives 1489.

Exam Tip: Double-check digit ordering for correctness.

Question 4. Form numbers using digits 0, 7, 2, 3
Answer: Greatest: 7320, Smallest: 2037
In simple words: Start the smallest number with 2, followed immediately by 0, then 3 and 7.

Exam Tip: Remember that 0 cannot occupy the thousands place.

I. ACTIVITY:

Question 1. Paste different coloured bindis on the abacus to show the number represented by Th: 4, H: 2, T: 6, O: 3. Write the number in words and in expanded form.
Answer:
Number: 4263
Words: Four thousand two hundred sixty-three
Expanded form: 4000 + 200 + 60 + 3
In simple words: The abacus shows 4 thousands, 2 hundreds, 6 tens, and 3 ones, which combine to form 4263.

Exam Tip: Count the beads or bindis on each rod of the abacus carefully to determine the digit.

J. Complete upto page 14 of Maths Text Book and practice similar exercises in rough exercise book.

Question 1. Complete textbook exercises and practice problems.
Answer: Complete all assigned textbook pages and practice similar questions in your notebook.
In simple words: Regular practice helps reinforce number concepts and place value.

Exam Tip: Keep your notebook neat and organized.

K. Revise tables from 2 to 10.

Question 1. Learn and revise multiplication tables from 2 to 10.
Answer: Memorize multiplication tables from 2 through 10 thoroughly.
In simple words: Knowing your tables by heart makes multiplication and division much faster and easier.

Exam Tip: Recite tables daily for quick mental recall.

SCIENCE PROJECT

Question 1. Collect seeds of different colours and sizes (rice, pumpkin, wheat, moong, masoor, etc.) and paste them on a piece of thermocol or cardboard to make a pattern, design, or drawing.
Answer: Collect various seeds and use glue to arrange them into a creative pattern or drawing on cardboard.
In simple words: Use different natural seeds to create an artistic mosaic pattern.

Question 2. Visit a Nursery or Greenhouse to observe plants in different stages of growth and prepare feedback regarding the visit.
Answer: Visit a local plant nursery, observe seeds, saplings, and mature plants, and write down your observations.
In simple words: Observe how tiny seeds grow into large plants at a nursery.

Exam Tip: Note down plant names and growth stages to share in class.

Things to do

Question 1. Practice a page of handwriting (Letter and Number formation) daily.
Answer: Practice neat handwriting and proper number formation every day in your practice notebook.
In simple words: Daily writing practice improves handwriting clarity and neatness.

Exam Tip: Maintain consistent spacing and sizing between letters and numbers.