Post on 30-Dec-2015
transcript
Add positive and negative fractions and decimals.
Estimate the value of each expression.
1. –6.2 + 9.9
2.
3. 18.31 – 22.9
4.
5. –0.529 + (–0.44)
203
103 137
15
14
7
2
1. Write all mixed numbers as improper fractions.
2. Make the bottoms the same. 1. put the negative on the top number.
3. Use integer rules to add the numerators … the bottom stays the same.
4. Simplify
5
43
5
19
)4
3(
3
2
12
1
12
1
12
9
12
8
Find the sum of .
Write fractions with a common denominator.
Rewrite the problem with the negative in the numerator.
Add the numerators.
Simplify. Move the negative in front of the fraction.
3
1
6
5
6
2
6
5
6
3
6
25
2
1
6
3
1. Determine the sign of the answer.
2. Do you add or subtract?
3. Line up the decimal points & add or subtract.
The change in the value of Digimaxx stock last week was points. This week the change in the stock’s value was points. Find the total change in value of Digimaxx stock over the last two weeks.
Write the problem.
Write as improper fractions.
Write with common denominators.
Put the negatives in the numerators. Add and simplify.
413
321
32
41 13
3
51 and
4
133 3
241
12
20
3
5 and
12
39
4
13
12114
12
59
12
2039
12
20
12
39
Find the value of −3.52 + 14.7.
Only one decimal is negative. The answer will have the sign of the number with the larger absolute value.
Line up the decimal points and subtract.
− 3.52 + 14.7 = 11.1818.11
52.3
70.14
Find each sum.
1. −8.2 + (−2.3)
2.
3. 0.49 + (−0.6)
4.
3
2
9
2
41
21 21
What are the steps you would go through to find the
value of ? 4
1
3
2