Rational Number Operations Quiz

When adding or subtracting decimal, you MUST

• Always put the bigger number on top

• Line up the decimals

• Work left to right

• Line up the numbers however

When multiplying decimals you MUST

• Line up the decimals

• Work left to right

• Count the scoops

• Put the bigger number on the bottom

When dividing decimals,

• ignore the decimals

• there can NOT be a decimal on the inside

• put the bigger number on the outside

• there can NOT be a decimal on the outside

 $5.65\ +\ 1.2\ =$  

• 6.85

• 5.77

• 4.45

• 5.53

 $8.2\ \times\ 0.3\ =$  

• 24.6

• 246

• 2.46

• 0.246

 $12.3\ \div\ 0.3\ =$  

• 410

• 41

• 4.1

• 0.41

When adding or subtracting fractions,

• Add/subtract the denominators

• denominators MUST be the same

• numerators MUST be the same

When multiplying fractions you MUST

• cross multiply

• multiply straight across and simplify

• never simplify

When dividing fractions you MUST

• FLIP CHANGE KEEP

• KEEP CHANGE FLIP

• KEEP FLIP CHANGE

Apply the Texas 2-Step (Change to an improper fraction)

 $3\ \frac{2}{3}$  

•  $\frac{11}{3}$  

•  $\frac{12}{3}$  

•  $\frac{11}{9}$  

•  $\frac{8}{3}$