Colombia · Grado 2 · Practice Sheet 1

1. 1.

   Add 45 and 28.

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   How many tens are there in the number 42?

   Formula:Place Value

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

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3. 3.

   Subtract 59 from 64.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   What is 6 − 2?

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   Fill in the missing number: 10 + ___ = 20.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   What is double 13?

   Formula:Doubling

   $d = 2 \times n$

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7. 7.

   How many tens are there in the number 13?

   Formula:Place Value

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

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8. 8.

   Add 6 + 16 + 13.

   Formula:Addition of Three Numbers

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

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9. 9.

   Add 49 and 24.

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    What is 18 − 14?

    Formula:Subtraction

    $\text{difference} = a - b$

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11. 11.

    There are 3 bags with 5 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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12. 12.

    Add 89 and 29.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    What is 9 + 1?

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    How many tens are there in the number 78?

    Formula:Place Value

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

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15. 15.

    What is 7 − 3?

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    What is 1 + 3?

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    What is 17 − 10?

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    What is 3 + 6?

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    How many tens are there in the number 74?

    Formula:Place Value

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

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20. 20.

    You have $8 and $1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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