Brazil · Ano 2 · Practice Sheet 39

1. 1.

   Subtract 13 from 74.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   Fill in the missing number: 11 + ___ = 25.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   How many tens are there in the number 53?

   Formula:Place Value

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

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4. 4.

   Subtract 67 from 76.

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   Fill in the missing number: 14 + ___ = 29.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   Add 12 + 16 + 3.

   Formula:Addition of Three Numbers

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

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7. 7.

   What is 2 + 4?

   Formula:Addition

   $\text{sum} = a + b$

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8. 8.

   What is 5 − 3?

   Formula:Subtraction

   $\text{difference} = a - b$

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9. 9.

   What is half of 4?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    Continue the pattern by counting in 2s: 4, 6, ___

    Formula:Skip Counting

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

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11. 11.

    Subtract 28 from 90.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    Add 12 + 18 + 14.

    Formula:Addition of Three Numbers

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

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13. 13.

    What is half of 8?

    Formula:Halving

    $h = n \div 2$

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14. 14.

    Subtract 61 from 97.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    What is half of 22?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    What is double 16?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    How many tens are there in the number 64?

    Formula:Place Value

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

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18. 18.

    What is 6 + 6?

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    There are 2 bags with 4 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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20. 20.

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

    Formula:Skip Counting

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

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