Australia · Year 3 · Practice Sheet 39

1. 1.

   Subtract 20 from 31.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   What is double 21?

   Formula:Doubling

   $d = 2 \times n$

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3. 3.

   Add 67 and 27.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   What is double 6?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   Subtract 23 from 72.

   Formula:Subtraction

   $\text{difference} = a - b$

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6. 6.

   What is half of 18?

   Formula:Halving

   $h = n \div 2$

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7. 7.

   Subtract 19 from 40.

   Formula:Subtraction

   $\text{difference} = a - b$

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8. 8.

   What is half of 36?

   Formula:Halving

   $h = n \div 2$

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9. 9.

   Subtract 40 from 68.

   Formula:Subtraction

   $\text{difference} = a - b$

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10. 10.

    There are 3 bags with 7 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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11. 11.

    Add 16 + 6 + 10.

    Formula:Addition of Three Numbers

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

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12. 12.

    What is 10 × 9?

    Formula:Multiplication (Times Tables)

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

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13. 13.

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

    Formula:Skip Counting

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

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14. 14.

    You have $8 and $7. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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15. 15.

    How many tens are there in the number 58?

    Formula:Place Value

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

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16. 16.

    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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17. 17.

    How many tens are there in the number 63?

    Formula:Place Value

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

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18. 18.

    What is 6 × 5?

    Formula:Multiplication (Times Tables)

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

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19. 19.

    Add 59 and 35.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    What is half of 14?

    Formula:Halving

    $h = n \div 2$

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