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Estimation

KS3 Maths Foundation Questions – Estimation  1) What is the error when each of these are rounded to 2 significant figures?

a) 8.763 =

b) 13019 =

c) 7777 =

d) 13.54 =

e) 0.765443 =

f) 2.546 = 2) Estimate the following:

a) 22 x 14 = x =

b) 65 ÷ 22 = ÷ =

c) 15 x 76 = x =

d) 92 ÷ 14 = ÷ =

e) 19 x 33 = x =

f) 55 ÷ 17 = ÷ = 3) Estimate these harder questions:

a) 8.78 + 55.8 + 7.43 =

b) 67.45 – 14.572 =

c) 19 x 9 =

d) e) KS3 Maths Higher Questions – Estimation  1) What is the error when each of these are rounded to 2 significant figures?

a) 5.763 =

b) 6777 =

d) 23.545 =

e) 3.5443 =

f) 0.546 = 2) Estimate the following:

a) 55 ÷ 12 = ÷ =

b) 115 x 6 = x =

c) 482 ÷ 141 = ÷ =

d) 39 x 57 = x =

e) 1235 ÷ 234 = ÷ = 3) Estimate these harder questions:

a) 4.73 + 25.5 + 0.73 =

b) 57.75 – 24.192 =

c) 29 x 18 =

d) e)  4) Find the range of values possible for:

a) 120 rounded to the nearest 10

b) 129.38 rounded to 1 decimal place

c) 33.928 rounded to 3 decimal places

d) 4.981 rounded to 4 significant figures

e) 0.8 rounded to 1 significant figures Previous      1 2 3 4 5 6       Next

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