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Hungary · Grade 8 · Practice Sheet 46

Sheet code: HUNGARY-G8-S46 · 20 questions

Name: ______________

Date: ______________

1.
Ft 1,800 is invested at 5% simple interest per year for 6 years. Find the interest earned.
Formula:Simple Interest
$I = \dfrac{P \times r \times t}{100}$
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2.
Find the circumference of a circle whose radius is 18 m. (Use π ≈ 3.14159)
Formula:Circumference of a Circle
$C = 2\pi r$
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3.
A bag has 12 equally likely marbles, of which 3 are red. Find the probability of drawing a red marble (to 3 d.p.).
Formula:Simple Probability
$P(E) = \dfrac{\text{favourable}}{\text{total}}$
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4.
A train moves at 69 km/h for 5.3 hours. How far does it travel?
Formula:Distance from Speed & Time
$d = v \times t$
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5.
A triangle has a base of 16 cm and a height of 8 cm. Find its area.
Formula:Area of a Triangle
$A = \tfrac{1}{2} b h$
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6.
A value changes from 23 to 259. Find the percentage change (to 2 d.p.).
Formula:Percentage Change
$\%\,\text{change} = \dfrac{\text{new} - \text{old}}{\text{old}} \times 100$
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7.
A triangle has a base of 4 cm and a height of 24 cm. Find its area.
Formula:Area of a Triangle
$A = \tfrac{1}{2} b h$
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8.
A circle has a radius of 20 cm. Find its area. (Use π ≈ 3.14159)
Formula:Area of a Circle
$A = \pi r^2$
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9.
An object has mass 84 g and volume 20 cm³. Find its density.
Formula:Density
$\rho = \dfrac{m}{V}$
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10.
A car travels 623 km in 7 hours. Find its average speed.
Formula:Speed
$v = \dfrac{d}{t}$
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11.
A cylinder has radius 8 cm and height 13 cm. Find its volume. (π ≈ 3.14159)
Formula:Volume of a Cylinder
$V = \pi r^2 h$
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12.
An object has mass 106.2 g and volume 18 cm³. Find its density.
Formula:Density
$\rho = \dfrac{m}{V}$
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13.
A value changes from 114 to 184. Find the percentage change (to 2 d.p.).
Formula:Percentage Change
$\%\,\text{change} = \dfrac{\text{new} - \text{old}}{\text{old}} \times 100$
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14.
A circle has a radius of 16 cm. Find its area. (Use π ≈ 3.14159)
Formula:Area of a Circle
$A = \pi r^2$
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15.
A current of 7.1 A flows through a 23 Ω resistor. Find the voltage across it.
Formula:Ohm's Law
$V = I R$
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16.
Ft 1,800 is invested at 6% simple interest per year for 3 years. Find the interest earned.
Formula:Simple Interest
$I = \dfrac{P \times r \times t}{100}$
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17.
A train moves at 87 km/h for 3.9 hours. How far does it travel?
Formula:Distance from Speed & Time
$d = v \times t$
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18.
What is 20% of 250?
Formula:Percentage of a Quantity
$\text{result} = \dfrac{p}{100} \times N$
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19.
Ft 500 is invested at 3% simple interest per year for 2 years. Find the interest earned.
Formula:Simple Interest
$I = \dfrac{P \times r \times t}{100}$
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20.
A triangle has a base of 20 cm and a height of 15 cm. Find its area.
Formula:Area of a Triangle
$A = \tfrac{1}{2} b h$
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