Add/Subtract and Multiplying/Dividing Rational Numbers

A negative number divided by a positive number will give you a negative answer.

• True

• False

When we are adding, the rule for numbers with the same sign is...

• same signs subtract

• same signs add and keep

• same signs positive

• same signs negative

Same signs add and keep,
different signs subtract,
keep the sign of...

• the first number

• the smaller number

• the bigger value

• the last number

When multiplying decimals, how do I know where to put the decimals in my answer?

• I don't

• Always 2 places

• The places behind the decimal in the problem

• Take your best guess

When dividing fractions we...

• Keep, flip, change

• Multiply by the reciprocal

• Keep, change, flip

• All of these

When dividing decimals, if the number on the outside of the division tent is a decimal we must...

• make it a whole number

• only move the decimal on the outside

• change it to a fraction

When multiplying fractions, we...

• multiply by the reciprocal

• multiply across

• add and keep

• find common denominators

Match the Rational Number Operation with the correct rule directions.

• Add the numbers, keep the sign

• Subtracting

• Keep Change Change then follow add rules

• Multiplying/Dividing different signs

• Answer is always negative

• Multiplying/Dividing the same sign

• Answer is always positive

• Adding numbers with different signs

• subtract, take the sign of the bigger #

• Adding Numbers with the same sign

When adding or subtracting fractions, I must always have a (a)   . I then add or subtract the ​ (b)   and keep ​ (c)   the same.

• Common Denominator

• Numerators

• Denominator

• Common Numerators

• Divisor

• Dividend

When multiplying fractions, I multiply the ​ (a)   and I multiply the ​ (b)   ​ (c)   .

• numerators

• denominators

• straight across

• cross multiply

• least common multiple

• greatest common factor