Mongolia · Grade 3 · Practice Sheet 39

1. 1.

   How many tens are there in the number 17?

   Formula:Place Value

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

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2. 2.

   What is half of 12?

   Formula:Halving

   $h = n \div 2$

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3. 3.

   Subtract 49 from 74.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   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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5. 5.

   Add 37 and 47.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   Add 4 + 15 + 11.

   Formula:Addition of Three Numbers

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

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7. 7.

   How many tens are there in the number 14?

   Formula:Place Value

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

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8. 8.

   There are 3 bags with 3 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.

   Add 5 + 18 + 6.

   Formula:Addition of Three Numbers

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

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10. 10.

    10 sweets are shared equally among 2 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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11. 11.

    Add 55 and 12.

    Formula:Addition

    $\text{sum} = a + b$

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12. 12.

    Add 9 + 4 + 5.

    Formula:Addition of Three Numbers

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

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13. 13.

    12 sweets are shared equally among 6 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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14. 14.

    What is half of 30?

    Formula:Halving

    $h = n \div 2$

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15. 15.

    Fill in the missing number: 10 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

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

    Formula:Adding Money

    $\text{total} = a + b$

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17. 17.

    Add 10 + 20 + 16.

    Formula:Addition of Three Numbers

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

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18. 18.

    What is 7 × 10?

    Formula:Multiplication (Times Tables)

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

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19. 19.

    How many tens are there in the number 13?

    Formula:Place Value

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

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20. 20.

    There are 6 bags with 4 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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