Portugal · Ano 2 · Practice Sheet 31

1. 1.

   Add 20 + 13 + 12.

   Formula:Addition of Three Numbers

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

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2. 2.

   Subtract 29 from 62.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   What is 15 − 3?

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   Continue the pattern by counting in 3s: 3, 6, ___

   Formula:Skip Counting

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

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5. 5.

   What is 5 + 4?

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   How many tens are there in the number 54?

   Formula:Place Value

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

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7. 7.

   Subtract 15 from 39.

   Formula:Subtraction

   $\text{difference} = a - b$

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8. 8.

   You have €1 and €4. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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9. 9.

   Fill in the missing number: 12 + ___ = 26.

   Formula:Missing Addend

   $b = \text{total} - a$

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10. 10.

    What is double 22?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    How many tens are there in the number 74?

    Formula:Place Value

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

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12. 12.

    What is half of 4?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    What is double 4?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    Fill in the missing number: 5 + ___ = 10.

    Formula:Missing Addend

    $b = \text{total} - a$

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15. 15.

    Add 9 + 9 + 9.

    Formula:Addition of Three Numbers

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

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16. 16.

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

    Formula:Skip Counting

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

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17. 17.

    What is 12 − 4?

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    How many tens are there in the number 96?

    Formula:Place Value

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

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19. 19.

    What is 17 − 12?

    Formula:Subtraction

    $\text{difference} = a - b$

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20. 20.

    How many tens are there in the number 22?

    Formula:Place Value

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

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