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
What is the area of a rectangle with a length of 4.2 inches and a width of 1.8 inches?
7.56 inches2
33.6 / 5 =
6.72
For which operation (addition, subtraction, multiplication, division) do you need to count the number of digits after the decimal points?
Multiplication
What is the perimeter of a rectangle with a width of 12.4 inches and a length of 9.1 inches?
43 inches
43.03 - 6.91 =
36.12
3.7 x 0.8 =
2.96
156 / 5 =
31.2
What digit do you need to do to the dividend (after the decimal point) when there are no more numbers to bring down but there is a remainder?
add a zero
1.23 + 8
9.23
12 - 4.61 =
7.39
0.07 x 0.4
0.028
What is the width of a rectangle with an area of 122 cm2 and a length of 6.1 cm?
20 cm
When multiplying by a decimal, how do you determine where the decimal should be placed in the product?
Count the spaces in both of the products
83 + 2.45
85.45
62.03 - 48.6
13.43
.23 x 6.7
1.541
119.77 / 59
2.03
What's the rule when you have a decimal as a dividend?
Bring the decimal straight up