Show:
Adding Decimals
Subtracting Decimals
Rounding Decimals
100
3.29 + 7.6 =
10.89
100
26.48 - 6.25 =
20.23
100
Round 6.38 to the whole number
6
200
6.7 + 42.9 =
49.6
200
76.48 - 24.64 =
51.84
200
Round 168.84 to the whole number
169
300
78.29 + 6.75 =
86.04
300
65.4 - 22.6 =
42.8
300
Round 287.15 to the whole number
287
400
106.348 + 32.4 =
138.748
400
68.4 - 13.298 =
55.102
400
If the number to the right of which you are rounding is 5 or greater, you do this to the number you are rounding.
What is rounding up?
500
When adding together decimals, you need to line these up.
What are the decimals?
500
When subtracting a number from nothing, you need to place this above the number before you can borrow.
What is a zero?
500
If the number to the right of the number you are rounding to is 4 or less, you do this.
What is drop off the numbers to the right of the rounding number?