Mongolia · Grade 3 · Practice Sheet 34

1. 1.

   Add 13 + 6 + 19.

   Formula:Addition of Three Numbers

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

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2. 2.

   What is half of 6?

   Formula:Halving

   $h = n \div 2$

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3. 3.

   Add 5 + 10 + 13.

   Formula:Addition of Three Numbers

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

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4. 4.

   Add 51 and 45.

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   Fill in the missing number: 3 + ___ = 15.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   What is 5 × 10?

   Formula:Multiplication (Times Tables)

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

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7. 7.

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

   Formula:Skip Counting

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

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8. 8.

   What is 3 × 8?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   15 sweets are shared equally among 3 children. How many does each child get?

   Formula:Division (Equal Sharing)

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

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10. 10.

    You have ₮7 and ₮5. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    How many tens are there in the number 82?

    Formula:Place Value

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

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12. 12.

    What is half of 10?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    Add 15 + 9 + 19.

    Formula:Addition of Three Numbers

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

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14. 14.

    Fill in the missing number: 4 + ___ = 6.

    Formula:Missing Addend

    $b = \text{total} - a$

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15. 15.

    Continue the pattern by counting in 10s: 30, 40, ___

    Formula:Skip Counting

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

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16. 16.

    Fill in the missing number: 12 + ___ = 27.

    Formula:Missing Addend

    $b = \text{total} - a$

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17. 17.

    There are 3 bags with 7 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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18. 18.

    You have ₮6 and ₮6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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19. 19.

    How many tens are there in the number 60?

    Formula:Place Value

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

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20. 20.

    What is half of 12?

    Formula:Halving

    $h = n \div 2$

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