Taiwan · Grade 2 · Practice Sheet 18

1. 1.

   Fill in the missing number: 9 + ___ = 16.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   Subtract 62 from 68.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   Fill in the missing number: 15 + ___ = 17.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   What is 10 − 7?

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   Subtract 49 from 65.

   Formula:Subtraction

   $\text{difference} = a - b$

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6. 6.

   What is half of 32?

   Formula:Halving

   $h = n \div 2$

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7. 7.

   What is 5 × 7?

   Formula:Multiplication (Times Tables)

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

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8. 8.

   There are 5 bags with 8 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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9. 9.

   What is half of 20?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    You have NT$ 4 and NT$ 1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    Continue the pattern by counting in 10s: 40, 50, ___

    Formula:Skip Counting

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

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12. 12.

    What is 5 × 6?

    Formula:Multiplication (Times Tables)

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

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13. 13.

    What is half of 30?

    Formula:Halving

    $h = n \div 2$

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14. 14.

    Add 30 and 28.

    Formula:Addition

    $\text{sum} = a + b$

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15. 15.

    What is half of 16?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    What is 3 × 2?

    Formula:Multiplication (Times Tables)

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

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17. 17.

    What is half of 42?

    Formula:Halving

    $h = n \div 2$

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18. 18.

    How many tens are there in the number 69?

    Formula:Place Value

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

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19. 19.

    What is 6 − 2?

    Formula:Subtraction

    $\text{difference} = a - b$

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20. 20.

    What is double 10?

    Formula:Doubling

    $d = 2 \times n$

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