Name:
Date:
7.4 Subtract Mixed Numbers
MathLinks 7, pp. 252–259
Key Ideas Review
Choose from the following terms to complete the statements in #1 to #3.
whole
fractions
unlike
estimate
regrouped
improper
1. a) When subtracting mixed numbers with like denominators, you can subtract
numbers and subtract the
the
.
denominators,
b) When subtracting mixed numbers with
you can also determine a common denominator for the fractions
2. To check your answer, compare to a(n)
.
3. Sometimes, mixed numbers need to be
or changed to
fractions before subtracting.
Practise and Apply
4. Write a subtraction statement
to represent each diagram, then
subtract.
a)
⫺
5. Subtract. Write your answers in
lowest terms. Check your answers
using estimation. Show your work.
4 - 3__
2
a) 5__
5
5
6
7 - 3__
b) 3__
9
9
b)
⫺
2 - 2__
1
c) 6__
3
3
c)
_
5
1
d) 12__ - 10__
6
6
82 MHR • Chapter 7: Add and Subtract Fractions
Name:
6. Determine each difference. Write
your answers in lowest terms. Show
your work.
1 - 1__
1
a) 3__
4
2
Date:
9. Justin likes to get 7 h of sleep a
night. He woke up after sleeping for
1 h. How many more hours does
5__
3
he need to get the amount of sleep
he likes? Show your work.
3
4
b) 5___ - 2__
5
10
3
1 - 2__
c) 4__
4
3
7 - 3__
2
d) 4__
9
3
1 cans of
7. A punch recipe calls for 3__
4
orange juice. You have one can in
1 can in the fridge.
the freezer and __
2
How many more cans do you need?
Include diagrams to show your
thinking.
1 pages to write for a
8. Claudia has 2__
2
science report. She has completed
3
1__ pages. How many more pages
4
does she need to write? Show your
work.
2 laps of the track at his
10. Lars ran 6__
3
1 laps.
school. Renata ran 8__
4
a) How much farther did Renata
run? Show your work.
b) Check your answer using
estimation.
7.4 Subtract Mixed Numbers • MHR
83