CBSE Class 3 Mathematics Revision Worksheet Set 17

Question I. Solve the sums. Then find their answers in the crossword given below. Circle them. You can go from left to right, top to bottom and diagonally.
680-480=_____________
70x1=________________
10x10x1=______________
4280-4260=______________
6000-5950=______________
980-900=_________________
20x50=_________________
10x9=__________________
330+270=________________
5000-4999=_______________

Answer:
- 680 - 480 = 200 (Word: TWO HUNDRED - "TWO" starts at Row 1, Col 1 diagonally down to Row 3, Col 3. "HUNDRED" is in Row 6, Col 4 to Col 10)
- 70 x 1 = 70 (Word: SEVENTY - found in Row 1, Col 3 to Col 9)
- 10 x 10 x 1 = 100 (Word: HUNDRED - found in Row 6, Col 4 to Col 10)
- 4280 - 4260 = 20 (Word: TWENTY - found in Col 14, Row 6 to Row 11)
- 6000 - 5950 = 50 (Word: FIFTY - found in Col 2, Row 4 to Row 8)
- 980 - 900 = 80 (Word: EIGHTY - found in Col 1, Row 3 to Row 8)
- 20 x 50 = 1000 (Word: THOUSAND - found in Row 12, Col 3 to Col 10)
- 10 x 9 = 90 (Word: NINETY - found in Col 12, Row 4 to Row 9)
- 330 + 270 = 600 (Words: SIX HUNDRED)
- 5000 - 4999 = 1 (Word: ONE - found in Row 10, Col 1 to Col 3)

In simple words: First, solve the math sums to get the numbers. Next, find the names of those numbers written in the grid of letters. They can go across, down, or corner-to-corner.

Exam Tip: Cross off each number word as you find it so you do not search for the same one twice.

Question II.1. The product of 45 and 6 is___________________
Answer: 270
In simple words: When you multiply 45 by 6, the answer is 270.

Exam Tip: You can break this down as (40 x 6) + (5 x 6) = 240 + 30 = 270 to calculate it faster.

Question II.2. 1000 = 550 + _______________________
Answer: 450
In simple words: If you have 550, you need 450 more to reach 1000.

Exam Tip: Subtract 550 from 1000 to find the missing number easily.

Question II.3. Find the difference of 1800 and 1620 __________
Answer: 180
In simple words: Subtract 1620 from 1800 to get 180.

Exam Tip: "Difference" always means you must subtract the smaller number from the larger one.

Question II.4. 3 sets of 14 [circle] 5 sets of 12
Answer: <
In simple words: 3 sets of 14 is 42. 5 sets of 12 is 60. Since 42 is smaller than 60, we write the less-than sign.

Exam Tip: Multiply both sides first, then compare the two final numbers.

Question II.5. In 5367 digit 3 stands for________________
Answer: 3 hundreds (or 300)
In simple words: In the number 5367, the number 3 is in the hundreds place. This means it is worth 300.

Exam Tip: Remember the place value columns starting from the right: Ones, Tens, Hundreds, Thousands.

Question II.6. How many 7’s in 91 ? _________________
Answer: 13
In simple words: If you share 91 into groups of 7, you will get 13 groups.

Exam Tip: Divide 91 by 7 to find how many times 7 goes into it.

Question II.7. Take away 9 from the product of 15 and 3_______________
Answer: 36
In simple words: First multiply 15 by 3 to get 45. Then subtract 9 from 45 to get 36.

Exam Tip: "Take away" means subtraction and "product" means multiplication. Do the multiplication step first.

Question II.8. How many months in 1 year?
Answer: 12 months
In simple words: One year has 12 months.

Exam Tip: You can quickly count them from January to December to make sure your answer is correct.

Question II.9. 13 Th + 13 T = _____________
Answer: 13,130
In simple words: 13 Thousands is 13,000. 13 Tens is 130. Adding them together gives 13,130.

Exam Tip: "Th" stands for Thousands and "T" stands for Tens. Convert them to digits before adding them up.

Question II.10. How many days are there in July and August?______________
Answer: 62 days
In simple words: July has 31 days and August has 31 days. Together they have 62 days.

Exam Tip: Remember that July and August are two months in a row that both have 31 days.

Question III. Number Patterns: Observe the pattern and solve the puzzle.
Across
b) 41, 43 _______________
d) 56, 59 ________________
e) 29, 26 _________________
g) 92, 94 _________________
i) 33, 40 __________________
j) 38, 31 __________________
l) 65, 70 __________________
m) 90, 85 _________________
o) 3, 9 ________________
p) 91, 84 ______________
q) 41, 37 ________________
r) 16, 20 _________________
s) 3, 8 ___________________
u) 83, 73 _________________
x) 82, 88 ________________
z) 73, 67 _________________
Down
a) 78, 76__________
c) 50, 53____________
f) 47, 43____________
h) 58, 63____________
j) 23, 25_____________
k) 40, 37____________
l) 62, 66____________
m) 91, 86____________
n) 31, 33______________
o) 23, 20______________
q) 28, 33______________
r) 31, 27_____________
t) 32, 34______________
v) 40, 37______________
w) 51, 55_____________
y) 56, 51_____________

Answer:
Across Clues (Pattern Rule & Next Term):
- b) 41, 43 (+2 pattern) -> 45
- d) 56, 59 (+3 pattern) -> 62
- e) 29, 26 (-3 pattern) -> 23
- g) 92, 94 (+2 pattern) -> 96
- i) 33, 40 (+7 pattern) -> 47
- j) 38, 31 (-7 pattern) -> 24
- l) 65, 70 (+5 pattern) -> 75
- m) 90, 85 (-5 pattern) -> 80
- o) 3, 9 (+6 pattern) -> 15
- p) 91, 84 (-7 pattern) -> 77
- q) 41, 37 (-4 pattern) -> 33
- r) 16, 20 (+4 pattern) -> 24
- s) 3, 8 (+5 pattern) -> 13
- u) 83, 73 (-10 pattern) -> 63
- x) 82, 88 (+6 pattern) -> 94
- z) 73, 67 (-6 pattern) -> 61

Down Clues (Pattern Rule & Next Term):
- a) 78, 76 (-2 pattern) -> 74
- c) 50, 53 (+3 pattern) -> 56
- f) 47, 43 (-4 pattern) -> 39
- h) 58, 63 (+5 pattern) -> 68
- j) 23, 25 (+2 pattern) -> 27
- k) 40, 37 (-3 pattern) -> 34
- l) 62, 66 (+4 pattern) -> 70
- m) 91, 86 (-5 pattern) -> 81
- n) 31, 33 (+2 pattern) -> 35
- o) 23, 20 (-3 pattern) -> 17
- q) 28, 33 (+5 pattern) -> 38
- r) 31, 27 (-4 pattern) -> 23
- t) 32, 34 (+2 pattern) -> 36
- v) 40, 37 (-3 pattern) -> 34
- w) 51, 55 (+4 pattern) -> 59
- y) 56, 51 (-5 pattern) -> 46

In simple words: Find how the first two numbers change to find the rule. Use that rule to find the next number in the blank space.

Exam Tip: Work out if the numbers are going up (addition) or going down (subtraction) to find the correct pattern rule quickly.