2.3 Problem Solving With Rational Numbers In Fraction Form
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1
2Date:
2.3
Problem Solving With Rational Numbers
in Fraction Form
MathLinks 9, pages 63–71
Key Ideas Review
Select words from column B to complete the statements in column A.
A
B
1. The addition of rational numbers can be modelled on a
a) adding the opposite
.
b) improper fractions
2. Subtraction can be modelled on a number line by
c) multiplication and
division
.
d) positive fractions
3. Rational numbers expressed as mixed numbers can be added,
subtracted, multiplied, and divided by fi rst writing them as
e) number line
.
4. Rational numbers expressed as proper or improper fractions
can be added, subtracted, multiplied, and divided in the same
way as
.
5. The sign of the product or quotient can be predicted from the
sign rules for
.
Check Your Understanding
6. Estimate and calculate. Show
7. Estimate and calculate. Show
your work.
your work.
1 __
5 __
2 __
3 __
7 __
(
3 __
)
4 __
(
3 __
)
(
)
(
)
a) -
+
-
b)
+
a)
-
×
b)
-
×
-
3
6
3
10
10
5
9
8
1 __
(
3 __
)
1 __
(
5 __
)
1 __
(
6 __
) (
5 __
)
5 __
c) 3
d) 3
× 2
+
-1
-
-4
c)
-
-
d) -
2
4
4
12
4
7
12
6
20 MHR • Chapter 2 978-007-097344-2
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