Rational Number Operations

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction, where both the numerator and the denominator are integers, and the denominator is not zero.

Tags

CCSS.5.NBT.A.2

Front

What does it mean to add rational numbers?

Back

Adding rational numbers involves finding a common denominator and then adding the numerators.

Tags

CCSS.7.NS.A.1C

Front

What is the process for subtracting rational numbers?

Back

To subtract rational numbers, find a common denominator, then subtract the numerators.

Tags

CCSS.7.NS.A.1C

Front

How do you multiply rational numbers?

Back

To multiply rational numbers, multiply the numerators together and the denominators together.

Tags

CCSS.7.NS.A.2C

Front

What is the rule for dividing rational numbers?

Back

To divide rational numbers, multiply by the reciprocal of the divisor.

Tags

CCSS.7.NS.A.2C

Front

If a stock price starts at $37 and changes by -$3, what is the new price?

Back

$34

Tags

CCSS.7.NS.A.1C

Front

Gretchen spends 1/2 hour grooming and 1/3 hour riding. How much time did she spend with Hobo?

Back

⅚ hours

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

If the temperature changes at -2ºF per hour, how long for a -14ºF change?

Back

7 hours

Tags

CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

Front

Cliff has ½ of his marbles blue. If ½ of those are dark blue, how much is dark blue?

Back

¼ of the marbles

Tags

CCSS.5.NF.B.6

Front

If a sheep eats ⅙ of a bale of hay a day, how many sheep can be fed with 2 bales?

Back

12 sheep

Tags

CCSS.5.NF.B.7B

CCSS.5.NF.B.7C