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Oak National Academy
12 questions
Significant figures are the digits in a number that contribute to the accuracy of the number. The first significant figure is the first __________ digit.
Which of the following are good estimate calculations for 989 × 213.4?
Which of the following are good, quick estimate calculations for 432.4 ÷ 1.85?
Which of the following are correct estimates for {17.9}\over {0.532}?
Which of the following is the correct estimate for {3.4\times3.92}\over {0.511}?
Horses and ponies are measured using ‘hands’ as a unit, where the width of the hand is used. This pony has a height of 9 hands. Estimate the height of the pony.
Match the following numbers to the correct rounded value.
Which of the following are sensible measurements for the lengths of an average house?
A bookshop wants to buy the new sci-fi books to sell in their store. The bookshop has £789 and each book costs £18.99. Select the correct estimate for the number of books the bookshop can buy.
Select the approximate answer to \frac{8}{15}\times\ 9.
A bicycle costs £18.99 for 1 week's hire. Which of the following shows the estimate to hire 6 bicycles for 4 weeks?
Jun buys paper £3.25, USB £\square, stamps £4.95, crisps £0.85, staples £2.30 and plug £1.99. He pays with a £20 note and receives about £2 back in change. Estimate the cost of the USB.
