CAIE IGCSE Mathematics Core C1.5 Ordering Questions

Practise comparing integers, fractions, decimals, percentages and standard-form values by rewriting them in a consistent form before ordering.

Exam points

convert mixed fractions, decimals and percentages to a common form before comparing
order several values from smallest to largest and preserve strict or equal relationships
select less-than, greater-than or equals signs after checking both numerical values

[Maximum number: 2]

Write these numbers in order, starting with the smallest.

$\frac{7}{18}$ 39% $\frac{15}{40}$ 0.388

................ < ................ < ................ < ................
smallest

$\frac{15}{40}$ , 0.388, $\frac{7}{18}$ , 39%

B1 for 3 in the correct order
OR M1 for 0.389 or 0.3888 or 0.3889, and 0.39, and 0.375

[Maximum number: 1]

Find a fraction that is greater than $\frac{1}{15}$ but less than $\frac{2}{15}$ .

$\frac{a}{b}$ , where $\frac{1}{15}<\frac{a}{b}<\frac{2}{15}$

[Maximum number: 2]

Write these numbers in order, starting with the smallest.

27 \% \quad \frac{5}{17} \quad 0.268 \quad \frac{7}{29}

< < <

$\frac{7}{29}$ , 0.268, 27\%, $\frac{5}{17}$
B1 for 3 in the correct order, or M1 for .27, .29..., [.268], .24...

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