Addition
0.95 + 5.09 =
6.04
5.68 - 4.23 =
1.45
8 x 6.5 =
52
13.8 / 3 =
4.6
For which 2 operations (addition, subtraction, multiplication, division) do you need to line up the decimal points?
Addition and Subtraction
11.27 + 9.4 =
20.67
67.75 - 8.1 =
59.65
4.2 x 1.8 =
7.56
33.60 / 5 =
6.72
For which operation (addition, subtraction, multiplication, division) do you need to count the total decimal places of the factors, in order to correctly place the decimal point in the answer?
Multiplication
9.6 + 0.18 =
9.78
43.03 - 6.912 =
36.118
3.7 x 0.8 =
2.96
156.0 / 100 =
1.56
What number do you need to annex (after the decimal point) when there are no more numbers to bring down in a division problem.... so that you aren't left with a remainder?
0
1.23 + 8 + .005
9.235
12 - 4.61 - 2.35 =
5.04
0.07 x 0.4
0.028
12.6 / .6
21
When multiplying by .1, .01, .001 etc. which way does the decimal point go, to the right or to the left?
To the left
8 + 2.45 + 3.026
13.476
100 - 4.25 =
95.75
.23 x 0.001
0.00023
13.60 / .04
340
When multiplying by a 100, how many places and which way do you move the decimal point?
Right two