Question

Considering significant digits, what is the correct answer to 2.3 + 234.617

Answer 1

When adding or subtracting, the answer must be rounded the the same number of decimal places as the number with the LEAST number of decimal places. How many decimal places is that?

Answer 2

2

Answer 3

Maybe I haven't explained well. Of the two numbers given, I think you'll agree that 2.3 has the least number of decimal places. How many decimal places does this number have after the decimal?

Answer 4

1

Answer 5

Right on. Now, after you subtract, you need to round your answer to the same decimal place. What do you get?

Answer 6

Sorry, after you add.

Answer 7

oh 236.9?

Answer 8

Well done. When adding or subtracting, the number of decimal places in the answer must match the number of decimal places in the number with the :EAST number of decimal places. Much easier to do that to write down, I think.

Answer 9

LEAST

Answer 10

oh nice! thanks so much I get it :)

Answer 11

You're welcome.