Brazil · Ano 2 · Practice Sheet 21

1. 1.

   How many tens are there in the number 71?

   Formula:Place Value

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

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2. 2.

   What is 3 × 7?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   Add 82 and 56.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   Fill in the missing number: 9 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

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

   Formula:Skip Counting

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

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6. 6.

   Add 20 + 13 + 13.

   Formula:Addition of Three Numbers

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

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7. 7.

   What is half of 18?

   Formula:Halving

   $h = n \div 2$

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8. 8.

   What is double 3?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   Fill in the missing number: 10 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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10. 10.

    What is double 17?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

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

    Formula:Skip Counting

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

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12. 12.

    There are 5 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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13. 13.

    Add 11 and 44.

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    Add 10 + 9 + 2.

    Formula:Addition of Three Numbers

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

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15. 15.

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

    Formula:Skip Counting

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

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16. 16.

    You have R$ 7 and R$ 7. 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 76?

    Formula:Place Value

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

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18. 18.

    Add 15 + 14 + 3.

    Formula:Addition of Three Numbers

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

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19. 19.

    How many tens are there in the number 26?

    Formula:Place Value

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

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20. 20.

    Add 5 + 12 + 5.

    Formula:Addition of Three Numbers

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

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