Cambodia · Grade 2 · Practice Sheet 31

1. 1.

   What is 1 + 3?

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   Add 3 + 7 + 14.

   Formula:Addition of Three Numbers

   $\text{sum} = a + b + c$

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3. 3.

   Subtract 23 from 54.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   What is 8 + 1?

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   Fill in the missing number: 11 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   You have ៛ 3 and ៛ 7. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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7. 7.

   Add 19 + 12 + 17.

   Formula:Addition of Three Numbers

   $\text{sum} = a + b + c$

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8. 8.

   Fill in the missing number: 6 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

   How many tens are there in the number 73?

   Formula:Place Value

   $\text{value} = \text{tens} \times 10 + \text{ones}$

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10. 10.

    You have ៛ 2 and ៛ 6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    What is 12 − 5?

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    What is 8 × 9?

    Formula:Multiplication (Times Tables)

    $\text{product} = a \times b$

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13. 13.

    Continue the pattern by counting in 3s: 12, 15, ___

    Formula:Skip Counting

    $\text{next} = \text{term} + \text{step}$

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14. 14.

    How many tens are there in the number 57?

    Formula:Place Value

    $\text{value} = \text{tens} \times 10 + \text{ones}$

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15. 15.

    What is half of 8?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    There are 4 bags with 6 apples in each bag. How many apples are there in total?

    Formula:Multiplication as Repeated Addition

    $\text{total} = \text{groups} \times \text{size}$

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17. 17.

    Fill in the missing number: 10 + ___ = 20.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    Continue the pattern by counting in 2s: 8, 10, ___

    Formula:Skip Counting

    $\text{next} = \text{term} + \text{step}$

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19. 19.

    What is half of 42?

    Formula:Halving

    $h = n \div 2$

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20. 20.

    What is double 24?

    Formula:Doubling

    $d = 2 \times n$

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