South Korea · Grade 2 · Practice Sheet 45

1. 1.

   What is 6 + 1?

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   Add 12 + 19 + 16.

   Formula:Addition of Three Numbers

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

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3. 3.

   What is double 6?

   Formula:Doubling

   $d = 2 \times n$

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4. 4.

   How many tens are there in the number 42?

   Formula:Place Value

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

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5. 5.

   What is 6 + 4?

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   What is double 4?

   Formula:Doubling

   $d = 2 \times n$

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7. 7.

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

   Formula:Skip Counting

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

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8. 8.

   How many tens are there in the number 62?

   Formula:Place Value

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

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9. 9.

   You have ₩6 and ₩7. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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10. 10.

    Add 63 and 13.

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    What is 16 − 4?

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    How many tens are there in the number 39?

    Formula:Place Value

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

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13. 13.

    What is double 3?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    Add 14 + 8 + 16.

    Formula:Addition of Three Numbers

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

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15. 15.

    What is 5 × 10?

    Formula:Multiplication (Times Tables)

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

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16. 16.

    What is double 8?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    How many tens are there in the number 81?

    Formula:Place Value

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

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18. 18.

    Add 13 + 7 + 9.

    Formula:Addition of Three Numbers

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

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19. 19.

    What is 8 × 10?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Subtract 11 from 38.

    Formula:Subtraction

    $\text{difference} = a - b$

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