Pearson Edexcel International GCSE (9–1) · MATHEMATICS A · Chapter
Number 5
18 practice questions
Practice questions
1–10 of 18
Question 1
1 mark · Easy
Answer and see the solution →Write 0.0047 in standard form.
Question 2
1 mark · Easy
Answer and see the solution →Calculate 5.86 + 12.3 and give your answer correct to 3 significant figures.
Question 3
2 marks · Easy
Answer and see the solution →A length is measured as 40 cm, correct to the nearest cm.
Write down the lower and upper bounds of the measurement.
Question 4
2 marks · Easy
Answer and see the solution →Estimate the value of 8.17 × 24.6 by rounding each number to 1 significant figure before multiplying.
Question 5
2 marks · Easy
Answer and see the solution →Calculate (3.2 × 10^4) + (6.8 × 10^3), giving your answer in standard form.
Question 6
2 marks · Easy
Answer and see the solution →A student's weight is measured as 55 kg to the nearest 5 kg. Write down the lower and upper bounds for the weight.
Question 7
3 marks · Easy
Answer and see the solution →(a)[2 marks]Convert 4250 seconds into minutes and seconds.
(b)[1 mark]Round your answer to the nearest minute.
Question 8
2 marks · Normal
Answer and see the solution →Calculate . Give your answer correct to 3 significant figures.
Question 9
2 marks · Normal
Answer and see the solution →Write 327 000 in standard form.
Question 10
3 marks · Normal
Answer and see the solution →Complete the table for the numbers below, giving the lower and upper bounds for each measured to the nearest 0.2.
Measured Value Lower Bound Upper Bound 5.4 7.8 12.2