Spain · Grado 3 · Practice Sheet 28

1. 1.

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

   Formula:Skip Counting

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

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2. 2.

   Subtract 12 from 99.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   Add 85 and 29.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   Subtract 21 from 32.

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   There are 2 bags with 3 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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6. 6.

   What is double 19?

   Formula:Doubling

   $d = 2 \times n$

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7. 7.

   What is 3 × 3?

   Formula:Multiplication (Times Tables)

   $\text{product} = a \times b$

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8. 8.

   What is double 7?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   What is half of 50?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    What is double 2?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    Fill in the missing number: 9 + ___ = 24.

    Formula:Missing Addend

    $b = \text{total} - a$

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12. 12.

    Add 6 + 3 + 10.

    Formula:Addition of Three Numbers

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

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13. 13.

    Continue the pattern by counting in 10s: 0, 10, ___

    Formula:Skip Counting

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

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14. 14.

    45 sweets are shared equally among 5 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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15. 15.

    Subtract 11 from 72.

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    You have €3 and €9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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17. 17.

    How many tens are there in the number 94?

    Formula:Place Value

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

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18. 18.

    Add 14 + 2 + 5.

    Formula:Addition of Three Numbers

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

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19. 19.

    What is 4 × 9?

    Formula:Multiplication (Times Tables)

    $\text{product} = a \times b$

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20. 20.

    Add 5 + 9 + 20.

    Formula:Addition of Three Numbers

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

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