Edexcel – foundation
\begin{aligned} &\text{Work out an estimate for } \dfrac{5.7\times 8.2}{0.26}. \\[8cm] \end{aligned}
\begin{aligned} &\text{Round the numbers: } 5.7 \approx 6,\; 8.2 \approx 8,\; 0.26 \approx 0.3. \\ &\text{Estimate: } \dfrac{6\times 8}{0.3} = \dfrac{48}{0.3} = 160. \end{aligned}
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