Thailand · Grade 1 · Practice Sheet 18

1. 1.

   What is 8 + 6?

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   Add 29 and 50.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   You have ฿4 and ฿3. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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4. 4.

   What is 7 + 8?

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   Continue the pattern by counting in 3s: 6, 9, ___

   Formula:Skip Counting

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

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6. 6.

   Add 12 and 8.

   Formula:Addition

   $\text{sum} = a + b$

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7. 7.

   What is double 19?

   Formula:Doubling

   $d = 2 \times n$

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8. 8.

   Add 42 and 56.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   Continue the pattern by counting in 10s: 40, 50, ___

   Formula:Skip Counting

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

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10. 10.

    What is double 7?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    Fill in the missing number: 15 + ___ = 20.

    Formula:Missing Addend

    $b = \text{total} - a$

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12. 12.

    Continue the pattern by counting in 10s: 40, 50, ___

    Formula:Skip Counting

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

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13. 13.

    Fill in the missing number: 15 + ___ = 24.

    Formula:Missing Addend

    $b = \text{total} - a$

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14. 14.

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

    Formula:Adding Money

    $\text{total} = a + b$

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15. 15.

    Continue the pattern by counting in 3s: 12, 15, ___

    Formula:Skip Counting

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

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16. 16.

    What is double 16?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    Add 86 and 28.

    Formula:Addition

    $\text{sum} = a + b$

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18. 18.

    Fill in the missing number: 10 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    Add 37 and 7.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Continue the pattern by counting in 5s: 15, 20, ___

    Formula:Skip Counting

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

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