CBSE Class 5 Mathematics Revision Worksheet Set 05

Question 1. Is the dotted line a line of symmetry? Yes or No
Answer: No
In simple words: A line of symmetry divides a figure into two identical, matching halves. If you fold along this dotted line, the two sides will not match completely.

Exam Tip: Always check if folding a shape along the given line makes both halves overlap perfectly.

Question 2. If you look at this object from the side, what will you see? (a) or (b)
Answer: (a)
In simple words: When viewing the stacked block structure from the side, you see a square face made of 3 units by 3 units, which corresponds to option (a).

Exam Tip: Visualize the 2D projection from the specified direction by counting rows and columns of visible squares.

Question 3. If you look at this object from the front, what will you see? (a) or (b)
Answer: (b)
In simple words: Looking at the connected blocks from the front shows a rectangular arrangement of side-by-side squares as shown in option (b).

Exam Tip: Pay close attention to whether the perspective is from the front, side, or top to count the exposed faces correctly.

Question 4. On a modern art painting, there are 5 green dots in the first row, 10 green dots in the second row, 20 green dots in the third row, 40 green dots in the fourth row and 80 green dots in the fifth row. If this pattern continues, how many green dots will there be in the sixth row?
Answer: 160 green dots
First row = 5
Second row = 10 (which is \(5 \times 2\))
Third row = 20 (which is \(10 \times 2\))
Fourth row = 40 (which is \(20 \times 2\))
Fifth row = 80 (which is \(40 \times 2\))
Sixth row = \(80 \times 2 = 160\)
In simple words: Each row doubles the number of dots from the previous row, so multiply the fifth row's dots by 2.

Exam Tip: Identify whether a pattern involves addition, subtraction, multiplication, or division before predicting the next term.

Question 5. Diane's Pizzeria made 57 pizzas on Sunday, 65 pizzas on Monday, 73 pizzas on Tuesday, 81 pizzas on Wednesday, and 89 pizzas on Thursday. If this pattern continues, how many pizzas will the pizzeria make on Friday?
Answer: 97 pizzas
Sunday = 57
Monday = 65 (difference of +8)
Tuesday = 73 (difference of +8)
Wednesday = 81 (difference of +8)
Thursday = 89 (difference of +8)
Friday = \(89 + 8 = 97\)
In simple words: The number of pizzas increases by 8 each day, so add 8 to Thursday's total to find Friday's total.

Exam Tip: Find the common difference between consecutive terms in an arithmetic sequence to solve for the next value.

Question 6. While sorting some beads, Jake put 1 bead in the first jar, 2 beads in the second jar, 4 beads in the third jar, 8 beads in the fourth jar, and 16 beads in the fifth jar. If this pattern continues, how many beads will Jake put in the sixth jar?
Answer: 32 beads
First jar = 1
Second jar = 2
Third jar = 4
Fourth jar = 8
Fifth jar = 16
Sixth jar = \(16 \times 2 = 32\)
In simple words: The number of beads doubles with every consecutive jar, so multiply 16 by 2.

Exam Tip: Powers of 2 frequently appear in geometric progression patterns. Look out for doubling sequences.