Ecuador · Grado 2 · Practice Sheet 5

1. 1.

   Subtract 21 from 39.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   What is double 12?

   Formula:Doubling

   $d = 2 \times n$

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3. 3.

   What is half of 18?

   Formula:Halving

   $h = n \div 2$

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4. 4.

   What is 7 + 5?

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   There are 5 bags with 8 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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6. 6.

   What is half of 14?

   Formula:Halving

   $h = n \div 2$

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7. 7.

   Subtract 7 from 69.

   Formula:Subtraction

   $\text{difference} = a - b$

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8. 8.

   Fill in the missing number: 9 + ___ = 18.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

   What is double 15?

   Formula:Doubling

   $d = 2 \times n$

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10. 10.

    You have $8 and $9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    Add 15 + 5 + 19.

    Formula:Addition of Three Numbers

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

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12. 12.

    You have $5 and $2. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    What is 1 + 2?

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    There are 4 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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15. 15.

    What is half of 6?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    How many tens are there in the number 68?

    Formula:Place Value

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

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17. 17.

    What is double 14?

    Formula:Doubling

    $d = 2 \times n$

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18. 18.

    Subtract 51 from 88.

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    What is 7 × 9?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Fill in the missing number: 5 + ___ = 12.

    Formula:Missing Addend

    $b = \text{total} - a$

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