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Lady bird [3.3K]
1 year ago
15

2

Mathematics
1 answer:
nignag [31]1 year ago
6 0

Answer:

1st = 4×10 ^-9

2nd= 4×10^1

3rd = 4×10^7

4th = 4×10^-5

Step-by-step explanation:

for whole numbers you just have to count from the ending till the number indicated beside the x10

for decimals you count from the front starting at the decimal till you cover the whole number

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Step-by-step explanation:

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