Bangladesh · Class 3 · Practice Sheet 21

1. 1.

   What is double 18?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   Fill in the missing number: 7 + ___ = 19.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   How many tens are there in the number 47?

   Formula:Place Value

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

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4. 4.

   Add 9 + 3 + 14.

   Formula:Addition of Three Numbers

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

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5. 5.

   Subtract 33 from 41.

   Formula:Subtraction

   $\text{difference} = a - b$

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6. 6.

   Continue the pattern by counting in 5s: 15, 20, ___

   Formula:Skip Counting

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

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7. 7.

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

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   Add 62 and 54.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   What is double 16?

   Formula:Doubling

   $d = 2 \times n$

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10. 10.

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

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    What is double 25?

    Formula:Doubling

    $d = 2 \times n$

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12. 12.

    What is half of 24?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    What is double 17?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    What is 9 × 5?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    Add 23 and 44.

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    How many tens are there in the number 43?

    Formula:Place Value

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

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17. 17.

    Add 73 and 47.

    Formula:Addition

    $\text{sum} = a + b$

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18. 18.

    Fill in the missing number: 6 + ___ = 9.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    What is double 9?

    Formula:Doubling

    $d = 2 \times n$

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20. 20.

    Subtract 47 from 97.

    Formula:Subtraction

    $\text{difference} = a - b$

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