Brazil · Ano 2 · Practice Sheet 23

1. 1.

   What is double 23?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   What is 10 × 7?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   What is 12 − 11?

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   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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5. 5.

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

   Formula:Adding Money

   $\text{total} = a + b$

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6. 6.

   Continue the pattern by counting in 5s: 20, 25, ___

   Formula:Skip Counting

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

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7. 7.

   What is 6 + 7?

   Formula:Addition

   $\text{sum} = a + b$

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8. 8.

   Continue the pattern by counting in 10s: 20, 30, ___

   Formula:Skip Counting

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

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9. 9.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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10. 10.

    What is 7 + 6?

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    Add 9 + 12 + 7.

    Formula:Addition of Three Numbers

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

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12. 12.

    Add 18 and 12.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    You have R$ 7 and R$ 9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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14. 14.

    What is 2 × 2?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    What is 13 − 4?

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    What is 7 + 3?

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    Add 35 and 21.

    Formula:Addition

    $\text{sum} = a + b$

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18. 18.

    Add 13 + 9 + 9.

    Formula:Addition of Three Numbers

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

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19. 19.

    What is half of 28?

    Formula:Halving

    $h = n \div 2$

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20. 20.

    What is 3 + 4?

    Formula:Addition

    $\text{sum} = a + b$

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