Ecuador · Grado 1 · Practice Sheet 50

1. 1.

   What is 2 + 4?

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   What is double 23?

   Formula:Doubling

   $d = 2 \times n$

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3. 3.

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

   Formula:Adding Money

   $\text{total} = a + b$

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4. 4.

   What is 9 + 7?

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   Add 72 and 51.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   What is 6 − 5?

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   What is double 7?

   Formula:Doubling

   $d = 2 \times n$

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8. 8.

   You have $3 and $7. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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9. 9.

   Add 22 and 25.

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    Fill in the missing number: 5 + ___ = 17.

    Formula:Missing Addend

    $b = \text{total} - a$

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11. 11.

    What is double 8?

    Formula:Doubling

    $d = 2 \times n$

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12. 12.

    What is 17 − 8?

    Formula:Subtraction

    $\text{difference} = a - b$

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13. 13.

    Add 55 and 32.

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    What is 6 − 1?

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

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

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is double 16?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    Continue the pattern by counting in 2s: 8, 10, ___

    Formula:Skip Counting

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

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18. 18.

    What is 9 − 3?

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    What is 2 + 8?

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Fill in the missing number: 14 + ___ = 18.

    Formula:Missing Addend

    $b = \text{total} - a$

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