You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
5<br />
b) a3 1 4 5 b<br />
Visualize a number line to estimate the difference.<br />
–(–1)<br />
–(–1)<br />
1<br />
–(–15)<br />
–2 – 5 –1<br />
0 1 2<br />
4<br />
The difference is a little less than 2.<br />
Use equivalent fractions to calculate the difference.<br />
1<br />
16<br />
Write 3 as the improper fraction .<br />
5<br />
5<br />
5<br />
5<br />
So, a3 1 a 16<br />
4 5 b 4 5 b<br />
25<br />
a 64<br />
20 20 b<br />
25 1642<br />
<br />
To subtract the integers in the<br />
20<br />
25 64<br />
numerator, add the opposite.<br />
<br />
20<br />
39<br />
,or 1 19<br />
20 20<br />
116 UNIT 3: <strong>Rational</strong> <strong>Number</strong>s
Change language