Mongolia · Grade 2 · Practice Sheet 47

1. 1.

   Add 17 and 21.

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   What is double 13?

   Formula:Doubling

   $d = 2 \times n$

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3. 3.

   What is half of 12?

   Formula:Halving

   $h = n \div 2$

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4. 4.

   There are 3 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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5. 5.

   What is 4 × 6?

   Formula:Multiplication (Times Tables)

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

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6. 6.

   How many tens are there in the number 51?

   Formula:Place Value

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

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7. 7.

   Add 20 + 18 + 11.

   Formula:Addition of Three Numbers

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

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8. 8.

   What is 7 + 6?

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   What is half of 30?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    Subtract 28 from 42.

    Formula:Subtraction

    $\text{difference} = a - b$

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11. 11.

    Add 11 + 6 + 3.

    Formula:Addition of Three Numbers

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

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12. 12.

    What is double 12?

    Formula:Doubling

    $d = 2 \times n$

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13. 13.

    Add 20 + 5 + 20.

    Formula:Addition of Three Numbers

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

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14. 14.

    Subtract 9 from 98.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    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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16. 16.

    Add 7 + 2 + 14.

    Formula:Addition of Three Numbers

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

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17. 17.

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

    Formula:Skip Counting

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

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18. 18.

    Fill in the missing number: 11 + ___ = 13.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    What is double 10?

    Formula:Doubling

    $d = 2 \times n$

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20. 20.

    What is 14 − 8?

    Formula:Subtraction

    $\text{difference} = a - b$

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