Facts
When adding and subtracting decimals, it's important to line up the __________ in both numbers.
Decimal point or place value
Add these decimals. 21.74 + 8.27
30.01
Multiply these decimals. 0.03 x 100
3
Subtract these decimals.
3.53 - 2
1.53
4.6 / 2
2.3
the number you are dividing into is called ____________
Dividend
Add these decimals.
17 + 9.54
26.54
Multiply these decimals. 0.7 x 2.6
1.82
Subtract these decimals.
2.15 - 1.05
1.1
0.98 / 1
0.98
the number you are dividing by is called ______________
Divisor
Add these decimals. 6.125 + 18
24.125
Multiply these decimals.
0.23 x 7.5
1.725
Subtract these decimals.
10.71 - 0.7
10.01
4 divided by 50
.08
**Bonus**
1000 points
1000 points
Add these decimals. 4.67 + 29.1
33.77
Multiply these decimals. 2.5 x 3.04
7.6
Subtract these decimals.
1.72 - 0.8
0.92
49.6 / 6.2
8
How to divide two decimals.
Write in long division form
Make the divisor a whole number by moving the decimal point to the ______
Move decimal point the same number of places in dividend
Complete long division
Carry up decimal point to final answer
Right
Add these decimals.
5.2 + 3.11
8.31
Multiply these decimals. 4.04 x 5.3
21.412
Subtract these decimals.
2.54 - 1.82
0.72
Divide 7.14 by 0.7
10.2