Colombia · Grado 2 · Practice Sheet 9

1. 1.

   What is 7 − 6?

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   Subtract 52 from 86.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   How many tens are there in the number 55?

   Formula:Place Value

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

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4. 4.

   Subtract 30 from 49.

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   Fill in the missing number: 15 + ___ = 22.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   What is 12 − 1?

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   What is double 19?

   Formula:Doubling

   $d = 2 \times n$

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8. 8.

   Subtract 40 from 99.

   Formula:Subtraction

   $\text{difference} = a - b$

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9. 9.

   You have $1 and $9. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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10. 10.

    How many tens are there in the number 50?

    Formula:Place Value

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

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11. 11.

    Fill in the missing number: 3 + ___ = 7.

    Formula:Missing Addend

    $b = \text{total} - a$

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12. 12.

    You have $2 and $6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    Subtract 65 from 82.

    Formula:Subtraction

    $\text{difference} = a - b$

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14. 14.

    Add 22 and 33.

    Formula:Addition

    $\text{sum} = a + b$

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15. 15.

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

    Formula:Adding Money

    $\text{total} = a + b$

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16. 16.

    Add 73 and 14.

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    Fill in the missing number: 13 + ___ = 23.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    What is half of 6?

    Formula:Halving

    $h = n \div 2$

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19. 19.

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

    Formula:Skip Counting

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

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20. 20.

    There are 5 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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