Decimals Adding Subtracting Dividing and Multiplying Fractions

When adding or subtracting with decimals, you -

• Move decimals out

• Shift decimals 3 places over

• Line up the decimals

• Ignore decimals

When multiplying with decimals, you -

• line up the decimals

• "Raise the roof"

• "Slide & Slide"

• bump out the decimals, multiply, & bump them back in

When multiplying fractions, you -

• multiply the numerators & multiply the denominators

• keep change flip

• find common denominators

• do not have to reduce

When dividing with fractions, you -

• divide across top and bottom

• find common denominator

• keep change flip

• reduce

The place value right after the decimal is called the __________.

• tens

• tenths

• thousands

• hundrenths

When dividing with decimals, if the divisor (on the outside) has a decimal you-

• ignore all decimals and divide like normal

• "Slide & Slide"

• count place value and move that many to left

• "Raise the Roof"

When multiplying or dividing a fraction with a whole number, you need to do what to the whole number?

• put it in fraction form by putting the same number on top and bottom

• put it in fraction form by putting it over 1

• reduce it and then put it in fraction form

• put it in fraction form by finding least common denominator

To divide decimals we must move the decimal on the outside and the inside of the division symbol.

• Always

• Sometimes

• Never

Convert to fraction in simplest form 0.8

• 4/5

• 8/100

• 4/10

• 16/20

11.3 × 2.5

• 79.1

• 13.8

• 22.597

• 28.25