Reading scales (Edexcel GCSE Maths): Flashcards
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11 cards from this deck
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Practise the cards
11 cards from this deck
First step in reading any scale
First step in reading any scale
Work out the value of each division
4 steps to find division value on a scale
4 steps to find division value on a scale
Look at 2 labels, count divisions, find difference, divide
Scale 100g to 150g, 5 divisions. Each division = ?
Scale 100g to 150g, 5 divisions. Each division = ?
per division
Examples of non-standard division values
Examples of non-standard division values
, (not just 1s or 10s)
When must you estimate a scale reading?
When must you estimate a scale reading?
When measurement doesn't land exactly on a marked division
3 steps for estimating between divisions
3 steps for estimating between divisions
Identify 2 divisions, estimate how far between, calculate value
Rule about decimal places when estimating
Rule about decimal places when estimating
Don't claim more precision than scale allows
3 cubes weigh 4.5kg. Weight of 1 cube = ?
3 cubes weigh 4.5kg. Weight of 1 cube = ?
per cube
Balance scale: 2.5kg total, 1.5kg cube + 4 tetrahedrons. Each?
Balance scale: 2.5kg total, 1.5kg cube + 4 tetrahedrons. Each?
per tetrahedron
4 strategic steps before scale-reading questions
4 strategic steps before scale-reading questions
Identify need, work out divisions, make reading, check answer
Why show working clearly in scale exam questions?
Why show working clearly in scale exam questions?
Examiners award marks for correct methods, not just answers