arithmetic problems?

Question

how do u multiply .72 * .34 please show all steps WITHOUT calculator. as well as 8/114

Answer 1

0.72 is just 72 divided by 100. 0.34 is just 34 divided by 100.

The easiest way is just to multiply 72 * 34, which gives you 2448, then divide by 100 twice (re-inserting the two factors of 1/100), leaving you with 0.2448.

To find 8/114 without a calculator, use long division. You should get 0.070175438596491228070175438596491, if you go on long enough.

Answer 2

What you do is you line up the decimal points and then multiply like normal. Once you're done multiplying, here's a trick: count the number of digits after the decimal for both numbers, that's how many places you need to go from the right to place the decimal:

.72 * .34 =
288 + 2160 = 2448

.72 >>> 2 places
.34 >>> 2 places >>> 4 places total:

2448 >>> 0.2448


For 8/114, you carry out long division as usual, but just keep on adding zeros on the end until it divides evenly or the decimals start repeating:

144| 8 = 0

144|80 = 0.0
144|800 = 0.07
144|20 = 0.070
144|200 = 0.0701 ....

And you keep going and going like the Energizer Bunny until you get the answer.

Answer 3

.72->2 decimal places
*.34->2 decimal places
__________
288
216x
__________
2448
since there 2+2 =4 decimal places the result should be in 4 decimal places
0.2448

Answer 4

poo