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Round 7 097 284 to the nearest tenth of a million?
A tenth of a million is 100,000. The 9 in the 10,000s place tells me to round up to 7,100,000.
Which decimal is between 1.5 and 1.7?
Assuming you mean only decimals which are tenths (.5 and .7 are tenths), I'll answer it as such. Look at the numbers - 1.5and 1.7 - if the number to the right of the decimal point were whole numbers, what number would be missing? It would be the number 6, right? So the number missing between 1.5 and 1.7 would be 1.6, which would give you 1.5, 1.6, 1.7
When adding 85.4 plus 097 plus 1.30 the number of decimal places in your answer should be?
Assuming you meant 85.4 + 0.97 + 1.30, the correct number of decimal places should be 1, that is, only one digit after the decimal point. When determining the number of significant digits for purposes of addition, you round it off to the least precise of the numbers - the one with the fewest digits to the right of the decimal point. If you are asking how many total digits the answer should have - the answer would be 3 - (the sum would be written 87.7).
