Thailand · Grade 2 · Practice Sheet 19

1. 1.

   What is half of 42?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   Add 15 and 38.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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4. 4.

   What is half of 38?

   Formula:Halving

   $h = n \div 2$

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5. 5.

   Fill in the missing number: 8 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   What is half of 32?

   Formula:Halving

   $h = n \div 2$

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7. 7.

   Continue the pattern by counting in 10s: 0, 10, ___

   Formula:Skip Counting

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

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8. 8.

   What is 16 − 10?

   Formula:Subtraction

   $\text{difference} = a - b$

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9. 9.

   What is 6 + 3?

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    Add 18 and 55.

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    Fill in the missing number: 15 + ___ = 25.

    Formula:Missing Addend

    $b = \text{total} - a$

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12. 12.

    Add 30 and 44.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    What is 7 × 8?

    Formula:Multiplication (Times Tables)

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

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14. 14.

    What is half of 32?

    Formula:Halving

    $h = n \div 2$

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15. 15.

    Fill in the missing number: 9 + ___ = 19.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is 2 + 4?

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    What is half of 50?

    Formula:Halving

    $h = n \div 2$

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18. 18.

    Subtract 42 from 90.

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    What is 3 × 8?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    What is half of 12?

    Formula:Halving

    $h = n \div 2$

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