Vietnam · Grade 1 · Practice Sheet 38

1. 1.

   What is double 8?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   You have VND 8 and VND 7. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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3. 3.

   Add 20 and 23.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   What is 7 + 3?

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   Add 11 and 60.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   What is 8 − 5?

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   You have VND 5 and VND 2. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   What is double 12?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   What is 8 + 1?

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    What is double 3?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    What is 17 − 5?

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    What is 4 + 3?

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    Fill in the missing number: 13 + ___ = 20.

    Formula:Missing Addend

    $b = \text{total} - a$

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14. 14.

    What is double 9?

    Formula:Doubling

    $d = 2 \times n$

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15. 15.

    You have VND 3 and VND 3. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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16. 16.

    What is 11 − 10?

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

    What is double 4?

    Formula:Doubling

    $d = 2 \times n$

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18. 18.

    Add 70 and 14.

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

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

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    Fill in the missing number: 13 + ___ = 15.

    Formula:Missing Addend

    $b = \text{total} - a$

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