Page 83 - Math Course 1 (Book 1)

Solving Fractions

Multiply Negative Fractions

Write Repeating Decimals as Fractions Find 2 2 3 1 Write the product in simplest form.
6 21 7 4
Find - Write the product in simplest form.
14 40 A. 27
A. 9 7
40
B. 6 1
9 14
B. -
40
C. - 63 C. 208
28
280
3
126 D. 7
D. - Answer 7 Answer
560

MO. 2 - L6b

Solving Problems Using Let’s Begin
Dimensional Analysis

Vocabulary A-Z REAL WORLD EXAMPLE

Let us learn some vocabulary
DONATIONS

Rasheed collected cash donations
for underprivileged children every
October. This October he collected
5
Dimensional Analysis $748. Last year he collected as much.
8
is the process of including units of measurement as How much did Rasheed collect last October?
factors when you compute. This approach analyzes
the dimensions of the problem and sets up a To f nd how much Rasheed collected last October
problem so that the starting dimension is changed multiply 748 by 5
to the answer by using a conversion fraction. 8

Starting Equal End Amount 784 5 = 784 5 Rename 784 as 784
amount amounts 8 1 8 1
24 inches 1 foot = feet 98 5
784
= Divide by the GCF, 8.
1 8 1
12 inches
98 5
= Multiply.
1 1
24 inches 1 foot = 2 feet
490
= or 490 Simplify.
12 inches 1

1 kg = 100kg Rasheed collected $490 last

Answer October
1000g =1 1 kg =1
1 kg 1000 g

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