Taiwan · Grade 3 · Practice Sheet 13

1. 1.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

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

   Formula:Adding Money

   $\text{total} = a + b$

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3. 3.

   How many tens are there in the number 48?

   Formula:Place Value

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

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4. 4.

   What is half of 12?

   Formula:Halving

   $h = n \div 2$

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5. 5.

   What is double 15?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   Subtract 67 from 82.

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   Continue the pattern by counting in 2s: 4, 6, ___

   Formula:Skip Counting

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

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8. 8.

   Add 89 and 58.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   What is half of 48?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    28 sweets are shared equally among 4 children. How many does each child get?

    Formula:Division (Equal Sharing)

    $\text{each} = \text{total} \div \text{groups}$

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11. 11.

    Subtract 18 from 63.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    What is double 5?

    Formula:Doubling

    $d = 2 \times n$

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13. 13.

    What is half of 10?

    Formula:Halving

    $h = n \div 2$

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14. 14.

    What is 9 × 2?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    There are 2 bags with 5 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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16. 16.

    How many tens are there in the number 75?

    Formula:Place Value

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

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17. 17.

    You have NT$ 7 and NT$ 2. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    What is 3 × 2?

    Formula:Multiplication (Times Tables)

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

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19. 19.

    You have NT$ 6 and NT$ 8. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    Add 5 + 11 + 10.

    Formula:Addition of Three Numbers

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

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