China · Grade 3 · Practice Sheet 7

1. 1.

   What is half of 6?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   How many tens are there in the number 10?

   Formula:Place Value

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

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3. 3.

   There are 2 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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4. 4.

   How many tens are there in the number 70?

   Formula:Place Value

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

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5. 5.

   What is double 17?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   You have ¥7 and ¥4. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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7. 7.

   How many tens are there in the number 36?

   Formula:Place Value

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

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8. 8.

   Add 13 + 19 + 18.

   Formula:Addition of Three Numbers

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

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9. 9.

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

   Formula:Skip Counting

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

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10. 10.

    What is double 19?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    Subtract 43 from 52.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    You have ¥4 and ¥7. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    What is double 24?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    What is half of 30?

    Formula:Halving

    $h = n \div 2$

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15. 15.

    You have ¥7 and ¥1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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16. 16.

    How many tens are there in the number 44?

    Formula:Place Value

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

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17. 17.

    What is half of 44?

    Formula:Halving

    $h = n \div 2$

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18. 18.

    Fill in the missing number: 12 + ___ = 21.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    What is double 18?

    Formula:Doubling

    $d = 2 \times n$

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20. 20.

    What is half of 40?

    Formula:Halving

    $h = n \div 2$

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