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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

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### Big and Small Numbers in the Physical World

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Age 14 to 16

Challenge Level

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- Getting Started
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$7.5 \times 10^6$ multiplied by $3 \times 10^2$ is the same as $7.5 \times 3 \times 10^6 \times 10^2$

$7.5 \times 10^6$ divided by $3 \times 10^2$ is the same as $\frac{7.5 \times 10^6}{3 \times 10^2}$ which is the same as $\frac{7.5}{3} \times \frac{10^6}{10^2}$

Work with numbers big and small to estimate and calculate various quantities in physical contexts.