Math Tools

Rounding Decimals:

1. underline the digit to be rounded

2. look at the digit to the right

3. determine if the underlined digit needs to stay the same or increase by 1

*0-4 underlined digit stays the same 5-9 underlined digit increases by 1

Adding/Subtracting Decimals

1. line up decimals

2. drop decimal straight down

3. fill in with zeros then add/subtract