The City School
Jr. B PECHS
Reinforcement Worksheet for the 1st Class Test
Grade 3 Mathematics
Rules for Rounding
Here's the general rule for rounding:
- If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 401
- If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30
Q1: Round the given numbers to the nearest tens and hundreds:
Numbers Nearest Tens Nearest Hundreds
1. 623
2. 257
3. 348
4. 783
5. 901
6. 849
7. 555
8. 968
9. 141
10. 472
Q2: Arrange given numbers in ascending order:
a. 893, 728, 239, 925, 675, 484: ________________________________________
b. 725, 927, 256, 582, 265, 453: ________________________________________
c. 175, 784, 751, 157, 487, 478: ________________________________________
Q3: Arrange the given numbers in descending order:
a. 922, 929, 974, 973, 989, 921: ________________________________________
b. 542, 466, 632, 835, 742, 861: ________________________________________
c. 632, 624, 723, 747, 829, 582: ________________________________________
Q4: Fill in the blanks using 10 / 100 more / less than:
i. 456 is 10 ________ than 446.
ii. 324 is 100 _______ than 424.
iii. 782 is ______ more than 682.
iv. 823 is ______ less than 923.
v. 555 is 10 _______ than 565.
Q5: Count on or back these numbers:
a. 890, ________, _________, 860, 850, _________.
b. 14, _____, 28, ______, 42, 49, _______, 63, 70.
c. 382, _____, 402, ______, _______, 432, _______.
d. 784, _______, 584, ________, _________, ________, 184.
Q6: Do these mentally:
a. 6 times 7 is: __________
b. 9 + 9 + 9 + 9 + 9 = _____________
c. 81 - 9 - 9 - 9 - 9 - 9 - 9 - 9 - 9 - 9 = ___________
d. 8 times 4 is: ______________
e. 9 x 7 = __________
f. 49 divided by 7 = _______
g. _______ x 4 = 36
h. 3 x ______ = 18
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