Hong Kong · Grade 1 · Practice Sheet 14

1. 1.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   Add 50 and 52.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   You have HK$ 6 and HK$ 4. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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4. 4.

   Continue the pattern by counting in 3s: 9, 12, ___

   Formula:Skip Counting

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

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5. 5.

   Add 42 and 48.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   You have HK$ 3 and HK$ 2. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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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.

   What is 2 + 3?

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   You have HK$ 3 and HK$ 8. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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10. 10.

    Fill in the missing number: 5 + ___ = 12.

    Formula:Missing Addend

    $b = \text{total} - a$

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11. 11.

    What is 6 − 2?

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

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

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    What is 3 + 1?

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    What is 9 − 6?

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    Fill in the missing number: 6 + ___ = 21.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    Continue the pattern by counting in 5s: 0, 5, ___

    Formula:Skip Counting

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

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17. 17.

    What is 11 − 8?

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    Add 29 and 6.

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    Continue the pattern by counting in 2s: 4, 6, ___

    Formula:Skip Counting

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

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20. 20.

    Add 69 and 45.

    Formula:Addition

    $\text{sum} = a + b$

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