South Korea · Grade 2 · Practice Sheet 14

1. 1.

   Fill in the missing number: 13 + ___ = 22.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   What is 8 + 9?

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   You have ₩1 and ₩2. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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4. 4.

   What is double 20?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   Add 33 and 7.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   What is 2 + 5?

   Formula:Addition

   $\text{sum} = a + b$

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7. 7.

   You have ₩5 and ₩1. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   Continue the pattern by counting in 3s: 12, 15, ___

   Formula:Skip Counting

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

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9. 9.

   What is 7 + 9?

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    Continue the pattern by counting in 5s: 20, 25, ___

    Formula:Skip Counting

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

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11. 11.

    Subtract 38 from 93.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    Add 17 + 17 + 6.

    Formula:Addition of Three Numbers

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

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13. 13.

    What is half of 44?

    Formula:Halving

    $h = n \div 2$

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14. 14.

    How many tens are there in the number 14?

    Formula:Place Value

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

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15. 15.

    What is half of 24?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    What is 8 + 4?

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    What is 18 − 1?

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

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

    Formula:Skip Counting

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

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19. 19.

    There are 5 bags with 2 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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20. 20.

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

    Formula:Skip Counting

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

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