Adding Decimals
7.4 + 14.9
22.3
23.5 - 3.85
19.65
7.1 x 3
21.3
What is the product of 0.4 and 0.07?
0.028
Which two operations do you have to line up the decimals first?
Addition and subtraction
3.5 + 38.9
42.4
31.2 - 18.2
13
.5 x .3
.15
Gary makes a rectangular flag that is 1.7 meters long and 0.8 meter wide.
How many square meters does the flag cover?
1.36
What number do you use to fill an empty space?
0
23.4 + 38.1
61.5
19.6 - 11
8.6
.5 x 5
2.5
Elena multiplies 0.06 × 0.5 on a calculator. The calculator shows a product of
0.03. Elena says the calculator must be broken because got 0.030. Is Elena’s calculator broken?
Explain.
No .03 is the same thing as .030
When Multiplying decimals, how do you know how many digits should be behind the decimal point?
Count how many digits are behind both of the numbers (scoop method)
36.12 + 5.793
41.913
32.56 - 23.3
9.26
6.05 x 8.2
49.61
Mei has 2.5 packages of pretzels. Each full package weighs 5.39 ounces. How many ounces of pretzels she has in all.
13.475
When Multiplying decimals, which of the two numbers goes on top when you are setting the problem up?
The number with the most digits
26.21 + 13.9
40.11
48 - 29.9
18.1
2 x .09
.18
.5 x .09
.045
How many children does Ms. Jarvis have?
3