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Thailand · Grade 7 · Practice Sheet 42

Sheet code: THAILAND-G7-S42 · 20 questions

Name: ______________
Date: ______________
  1. 1.

    Find the perimeter of a rectangle measuring 17 m by 32 m.

    Formula:Perimeter of a Rectangle
    P=2(l+w)P = 2(l + w)
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  2. 2.

    A value changes from 30 to 86. Find the percentage change (to 2 d.p.).

    Formula:Percentage Change
    % change=new−oldold×100\%\,\text{change} = \dfrac{\text{new} - \text{old}}{\text{old}} \times 100
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  3. 3.

    Convert 5.16 kilometres into metres.

    Formula:Metric Length Conversion
    1 km=1000 m1\,\text{km} = 1000\,\text{m}
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  4. 4.

    Solve for x: 3x + 10 = 25.

    Formula:Solving a Linear Equation
    x=c−bax = \dfrac{c - b}{a}
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  5. 5.

    Find 2/4 of 28.

    Formula:Fraction of a Quantity
    result=ab×N\text{result} = \dfrac{a}{b} \times N
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  6. 6.

    A car travels 588 km in 6 hours. Find its average speed.

    Formula:Speed
    v=dtv = \dfrac{d}{t}
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  7. 7.

    A train moves at 27 km/h for 4 hours. How far does it travel?

    Formula:Distance from Speed & Time
    d=v×td = v \times t
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  8. 8.

    Find the circumference of a circle whose radius is 4 m. (Use π ≈ 3.14159)

    Formula:Circumference of a Circle
    C=2πrC = 2\pi r
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  9. 9.

    Find the perimeter of a rectangle measuring 45 m by 15 m.

    Formula:Perimeter of a Rectangle
    P=2(l+w)P = 2(l + w)
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  10. 10.

    Find the area of a square with side length 15 cm.

    Formula:Area of a Square
    A=s2A = s^2
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  11. 11.

    A value changes from 57 to 94. Find the percentage change (to 2 d.p.).

    Formula:Percentage Change
    % change=new−oldold×100\%\,\text{change} = \dfrac{\text{new} - \text{old}}{\text{old}} \times 100
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  12. 12.

    A rectangle is 12 cm long and 24 cm wide. Find its area.

    Formula:Area of a Rectangle
    A=l×wA = l \times w
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  13. 13.

    Find the circumference of a circle whose radius is 10 m. (Use π ≈ 3.14159)

    Formula:Circumference of a Circle
    C=2πrC = 2\pi r
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  14. 14.

    A car travels 553 km in 7 hours. Find its average speed.

    Formula:Speed
    v=dtv = \dfrac{d}{t}
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  15. 15.

    Find the area of a square with side length 6 cm.

    Formula:Area of a Square
    A=s2A = s^2
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  16. 16.

    A value changes from 198 to 118. Find the percentage change (to 2 d.p.).

    Formula:Percentage Change
    % change=new−oldold×100\%\,\text{change} = \dfrac{\text{new} - \text{old}}{\text{old}} \times 100
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  17. 17.

    A right-angled triangle has legs of 18 cm and 3 cm. Find the length of the hypotenuse.

    Formula:Pythagorean Theorem
    c=a2+b2c = \sqrt{a^2 + b^2}
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  18. 18.

    A train moves at 54 km/h for 3.9 hours. How far does it travel?

    Formula:Distance from Speed & Time
    d=v×td = v \times t
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  19. 19.

    ฿4,100 is invested at 5% simple interest per year for 5 years. Find the interest earned.

    Formula:Simple Interest
    I=P×r×t100I = \dfrac{P \times r \times t}{100}
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  20. 20.

    Find 2/5 of 95.

    Formula:Fraction of a Quantity
    result=ab×N\text{result} = \dfrac{a}{b} \times N
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