Colombia · Grado 1 · Practice Sheet 20

1. 1.

   What is double 2?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   What is 5 − 4?

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   What is 2 + 7?

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   Fill in the missing number: 2 + ___ = 7.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   What is double 22?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   Fill in the missing number: 8 + ___ = 10.

   Formula:Missing Addend

   $b = \text{total} - a$

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7. 7.

   What is 7 − 3?

   Formula:Subtraction

   $\text{difference} = a - b$

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8. 8.

   Fill in the missing number: 4 + ___ = 8.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

   What is double 13?

   Formula:Doubling

   $d = 2 \times n$

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10. 10.

    You have $6 and $1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    Continue the pattern by counting in 5s: 5, 10, ___

    Formula:Skip Counting

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

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12. 12.

    You have $8 and $9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    Fill in the missing number: 3 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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14. 14.

    You have $5 and $4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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15. 15.

    What is double 9?

    Formula:Doubling

    $d = 2 \times n$

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16. 16.

    Fill in the missing number: 6 + ___ = 8.

    Formula:Missing Addend

    $b = \text{total} - a$

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17. 17.

    Continue the pattern by counting in 5s: 10, 15, ___

    Formula:Skip Counting

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

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18. 18.

    What is 7 + 2?

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    Fill in the missing number: 7 + ___ = 19.

    Formula:Missing Addend

    $b = \text{total} - a$

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20. 20.

    Continue the pattern by counting in 5s: 5, 10, ___

    Formula:Skip Counting

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

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