South Africa · Grade 3 · Practice Sheet 28

1. 1.

   Fill in the missing number: 13 + ___ = 28.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   Add 11 + 10 + 14.

   Formula:Addition of Three Numbers

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

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3. 3.

   Fill in the missing number: 4 + ___ = 11.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   What is double 9?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   Add 5 + 14 + 9.

   Formula:Addition of Three Numbers

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

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6. 6.

   How many tens are there in the number 28?

   Formula:Place Value

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

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7. 7.

   Fill in the missing number: 6 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   What is double 21?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   How many tens are there in the number 14?

   Formula:Place Value

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

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10. 10.

    What is half of 12?

    Formula:Halving

    $h = n \div 2$

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11. 11.

    What is double 18?

    Formula:Doubling

    $d = 2 \times n$

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12. 12.

    What is half of 48?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    Add 27 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    What is half of 28?

    Formula:Halving

    $h = n \div 2$

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15. 15.

    You have R1 and R9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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16. 16.

    Subtract 12 from 63.

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

    What is double 12?

    Formula:Doubling

    $d = 2 \times n$

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18. 18.

    What is half of 18?

    Formula:Halving

    $h = n \div 2$

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19. 19.

    You have R2 and R9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    Fill in the missing number: 9 + ___ = 23.

    Formula:Missing Addend

    $b = \text{total} - a$

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