Ecuador · Grado 3 · Practice Sheet 21

1. 1.

   24 sweets are shared equally among 3 children. How many does each child get?

   Formula:Division (Equal Sharing)

   $\text{each} = \text{total} \div \text{groups}$

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2. 2.

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

   Formula:Skip Counting

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

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3. 3.

   Add 50 and 20.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   How many tens are there in the number 84?

   Formula:Place Value

   $\text{value} = \text{tens} \times 10 + \text{ones}$

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5. 5.

   What is double 7?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

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

   Formula:Skip Counting

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

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7. 7.

   Add 74 and 17.

   Formula:Addition

   $\text{sum} = a + b$

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8. 8.

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

   Formula:Adding Money

   $\text{total} = a + b$

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9. 9.

   There are 6 bags with 4 apples in each bag. How many apples are there in total?

   Formula:Multiplication as Repeated Addition

   $\text{total} = \text{groups} \times \text{size}$

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10. 10.

    How many tens are there in the number 47?

    Formula:Place Value

    $\text{value} = \text{tens} \times 10 + \text{ones}$

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11. 11.

    Fill in the missing number: 6 + ___ = 15.

    Formula:Missing Addend

    $b = \text{total} - a$

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12. 12.

    Add 7 + 18 + 7.

    Formula:Addition of Three Numbers

    $\text{sum} = a + b + c$

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13. 13.

    Fill in the missing number: 5 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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14. 14.

    You have $4 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 8?

    Formula:Doubling

    $d = 2 \times n$

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16. 16.

    Continue the pattern by counting in 2s: 0, 2, ___

    Formula:Skip Counting

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

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17. 17.

    Fill in the missing number: 2 + ___ = 9.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    How many tens are there in the number 90?

    Formula:Place Value

    $\text{value} = \text{tens} \times 10 + \text{ones}$

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19. 19.

    Add 8 + 12 + 8.

    Formula:Addition of Three Numbers

    $\text{sum} = a + b + c$

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20. 20.

    Fill in the missing number: 10 + ___ = 16.

    Formula:Missing Addend

    $b = \text{total} - a$

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