Maths

Power of Maths: Paper 1 – Section 1
Activity 10: Finding orders of magnitude
OBJECTIVE: To write down the orders of magnitude of given numbers
1. Write the following numbers in scientific notation and hence write down their order of magnitude.
(a) 2·3 = _________________ Order of magnitude:
(b) 35642 = _________________ Order of magnitude:
(c) 0·00013 = _________________ Order of magnitude:
(d) 4765314 = _________________ Order of magnitude:
(e) 0·0000563 = _________________ Order of magnitude:
(f) 730 × 10 4 = _________________ Order of magnitude:
(g) 0·056 × 10 −2 = _________________ Order of magnitude:
(h) 0·512 × 10 −7 = _________________ Order of magnitude:
(i) 1 × 10 5 = _________________ Order of magnitude:
(j) 6·4 × 10 −9 = _________________ Order of magnitude:
2. Fill in the boxes.
(a) Which is 5⋅6 nearer to, 1 or 10?
Its order of magnitude is .
(b) Which is 725 nearer to, 100 or 1000?
Its order of magnitude is .
(c) Which is 0⋅017 nearer to, 0·01 or 0⋅1?
Its order of magnitude is .
(d) Which is 9563 nearer to, 1000 or 10000?
Its order of magnitude is .
(e) Which is 37 nearer to, 10 or 100?
Its order of magnitude is .
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