Addition
0.95 + 5.09 =
6.04
5.68 - 4.23 =
1.45
6.5 x 8 =
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
33.6 / 5 =
6.72
For which operations (addition, subtraction, multiplication, division) do you need to count the number of digits after the decimal points?
Multiplication
9.6 + 0.18 =
9.78
43.03 - 6.91 =
36.12
3.7 x 0.8 =
2.96
156 / 5 =
31.2
What digit do you need to add to the dividend (after the decimal point) when there are no more numbers to bring down, but you still have a remainder?
0
1.23 + 8
9.23
12 - 4.61 =
7.39
0.07 x 0.4
0.028
122 / 6.1
20
When multiplying by a decimal, how do you know where to put the decimal in your answer?
(some version of) Move it left/in front of the same number of digits as you counted in the multiplicand and multiplier
*Teacher decides if each group got it correct*
18 + 6.45
24.45
62 - 48.6
13.4
.23 x 6.7
1.541
42.12/ 19.5=
2.16
What's the rule when you have a decimal in a divisor?
Make the divisor a whole number.