79825
Description
Mind Map by Ellen Billingham, updated more than 1 year ago
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Created by Ellen Billingham
almost 11 years ago
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Converting numbers to
and from Standard Form
- What is standard form?
- Standard form is an accurate and simple way of writing
very large and very small numbers using powers of 10
- Standard form is an accurate and simple way of writing
very large and very small numbers using powers of 10
- Examples:
- 400 = 4 x 100 = 4 x 10²
- 45,300 = 4.53 x 10,000 = 4.53 x 10^4
- 0.03 = 3 x 0.01 = 3 x 10^-2
- 400 = 4 x 100 = 4 x 10²
- Reversing Standard Form
- 2.3 x 10^6 = 2.3 x 1,000,000 = 2,300,000
- 2.3 x 10^6 = 2.3 x 1,000,000 = 2,300,000
- Top tips!
- With small numbers, the power
of ten is "-(however many
decimal places there are)"
- WIth big numbers, the power of ten is the
number of digits after the first one
- With problems that involve having to change the multiplier, if you
move its decimal place to the left, ADD THE POWER!!
- And to the right, SUBTRACT THE POWER!!!
- And to the right, SUBTRACT THE POWER!!!
- READ THE QUESTIONS!
- With small numbers, the power
of ten is "-(however many
decimal places there are)"
- The multipliers always have to be numbers between 1 and 10
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