Thailand · Grade 4 · Practice Sheet 49

1. 1.

   Calculate 80 × 12.

   Formula:Multiplication

   $p = a \times b$

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2. 2.

   What is 4 × 3?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   Calculate 74 × 7.

   Formula:Multiplication

   $p = a \times b$

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4. 4.

   An item costs ฿19.22 and you pay with ฿30. How much change do you get?

   Formula:Change Due

   $\text{change} = \text{paid} - \text{cost}$

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5. 5.

   Calculate 32 × 10.

   Formula:Multiplication

   $p = a \times b$

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6. 6.

   What is 7 × 6?

   Formula:Multiplication (Times Tables)

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

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7. 7.

   Find the mean (average) of these numbers: 14, 11, 80, 21, 32, 82.

   Formula:Arithmetic Mean

   $\bar{x} = \dfrac{\sum x}{n}$

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8. 8.

   One item costs ฿6.25. Find the total cost of 16 items.

   Formula:Total Cost

   $\text{total} = \text{price} \times \text{quantity}$

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9. 9.

   Calculate 39 × 12.

   Formula:Multiplication

   $p = a \times b$

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10. 10.

    Find the perimeter of a rectangle measuring 19 m by 13 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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11. 11.

    Convert 9.48 kilometres into metres.

    Formula:Metric Length Conversion

    $1\,\text{km} = 1000\,\text{m}$

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12. 12.

    Find 5/8 of 136.

    Formula:Fraction of a Quantity

    $\text{result} = \dfrac{a}{b} \times N$

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13. 13.

    Find the mean (average) of these numbers: 82, 72, 75, 41, 70.

    Formula:Arithmetic Mean

    $\bar{x} = \dfrac{\sum x}{n}$

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14. 14.

    Find the area of a square with side length 22 cm.

    Formula:Area of a Square

    $A = s^2$

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15. 15.

    One item costs ฿3.26. Find the total cost of 13 items.

    Formula:Total Cost

    $\text{total} = \text{price} \times \text{quantity}$

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16. 16.

    An item costs ฿24.99 and you pay with ฿40. How much change do you get?

    Formula:Change Due

    $\text{change} = \text{paid} - \text{cost}$

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17. 17.

    Calculate 154 ÷ 7.

    Formula:Division

    $q = \dfrac{a}{b}$

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18. 18.

    Calculate 60 × 11.

    Formula:Multiplication

    $p = a \times b$

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19. 19.

    An item costs ฿41.23 and you pay with ฿60. How much change do you get?

    Formula:Change Due

    $\text{change} = \text{paid} - \text{cost}$

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20. 20.

    What is 4 × 2?

    Formula:Multiplication (Times Tables)

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

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