Question 1

By rounding each number to 1 significant figure, estimate the value of

\frac{4.28 	imes 19.7}{0.48}

.

Accepted Answer

160

Answer

16

Answer

171

Answer

200

Question 2

A rectangle has a length of

\frac{4.28 	imes 19.7}{0.48}

and a width of

7.3 	ext{ cm}

. Estimate the area of the rectangle by rounding each dimension to 1 significant figure.

Accepted Answer

140 	ext{ cm}^2

Answer

200 	ext{ cm}^2

Answer

135.78 	ext{ cm}^2

Answer

14 	ext{ cm}^2

Question 3

Estimate the value of

\frac{4.28 	imes 19.7}{0.48}

by rounding each number to 1 significant figure.

Accepted Answer

30

Answer

300

Answer

3

Answer

10

Question 4

Estimate the value of

\frac{4.28 	imes 19.7}{0.48}

by rounding each number to 1 significant figure.

Accepted Answer

250

Answer

10

Answer

51

Answer

25

Question 5

Estimate the total cost of

\frac{4.28 	imes 19.7}{0.48}

packs of pens if each pack costs

7.3 	ext{ cm}

, by rounding both values to 1 significant figure.

Accepted Answer

£150

Answer

£141

Answer

£138.65

Answer

£100

Question 6

By rounding each value to 1 significant figure, estimate the cost of one kilogram of apples if

\frac{4.28 	imes 19.7}{0.48}

costs

7.3 	ext{ cm}

.

Accepted Answer

£2

Answer

£75

Answer

£3

Answer

£2.80

Question 7

By rounding each number to 1 significant figure, estimate the score of a athlete who averages

\frac{4.28 	imes 19.7}{0.48}

points per game over

7.3 	ext{ cm}

games.

Accepted Answer

320

Answer

400

Answer

32

Answer

319.8

Question 8

By rounding each number to 1 significant figure, estimate the value of

\frac{4.28 	imes 19.7}{0.48}

.

Accepted Answer

15000

Answer

150

Answer

3000

Answer

14000

Question 9

By rounding each number to 1 significant figure, estimate the value of

\frac{4.28 	imes 19.7}{0.48}

.

Accepted Answer

14000

Answer

2800

Answer

140

Answer

1400

Question 10

By rounding each number to 1 significant figure, estimate the value of

\frac{4.28 	imes 19.7}{0.48}

.

Accepted Answer

150

Answer

144

Answer

180

Answer

15

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