Estimating and approximating
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problemPower countdown
In this twist on the well-known Countdown numbers game, use your knowledge of Powers and Roots to make a target.
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problemBig and small numbers in physics
Work out the numerical values for these physical quantities. -
problemSpeed-time problems at the Olympics
Have you ever wondered what it would be like to race against Usain Bolt?
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problemBig and small numbers in biology
Work with numbers big and small to estimate and calulate various quantities in biological contexts.
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problemA question of scale
Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?
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problemBig and small numbers in chemistry
Get some practice using big and small numbers in chemistry. -
problemThe fastest cyclist
Andy is desperate to reach John o'Groats first. Can you devise a winning race plan?
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problemLadder and cube
A 1 metre cube has one face on the ground and one face against a wall. A 4 metre ladder leans against the wall and just touches the cube. How high is the top of the ladder above the ground?