Download Comparing and Ordering Rational/Integer Rules

COMPARING AND ORDERING
RATIONAL/INTEGER RULES
REVIEW
Test Answers













1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
D
A
C
B
3/10
30%
¾
0.75
0.125
12.5%
C
B
D













14. B
15. B
16. 0.75
17. B
18. B
19. D
20. C
21. 16
22. 10
23. C
24. G
25. C
Bonus: ¼
Comparing Numbers on a Number Line


Numbers get larger as you move to the right on the
number line.
Numbers get smaller as you move to the left on the
number line.
Order the following from least to
greatest.






½
-3/8
-0.625
7/8
1.25
-1 1/8
Place the following on the number line
below:






½
-3/8
-0.625
7/8
1.25
-1 1/8
Adding Integers
Same signs … _____
Different signs… _____
Bigger team ….______
+ RULES
Review: Adding Integers

6 + -9

-3 + - 4

-10 + 15
-3
-7
5
Two Pencil Marks
-8 – 10
-2- -6
-8 + -10
-18
-2 + + 6
4
Dry erase boards
Gretchen bought a sweater for $23.89.
In addition, she had to pay $1.43 in sales
tax. She gave the sales clerk $30.
EXPLAIN how to find the change
Gretchen received from her total
purchase.
Do not solve.
Add the cost and the tax. Subtract the answer from 30.
38.1 + x
for x= - 6.12
38.1 + -6.12 Different signs subtract
38.10
+-6.12
31.98 Bigger team wins--positive
So what is the rule for
adding and subtracting decimals?
_ 3 + _ 1
8
8
Same signs add and keep -4
= -1
8
2
_8 _ 2
17
17
Two pencil marks
Same signs add and keep
-8 + -2
17
17
=
-10
17
-7.5 – (-3.01) = Y
Two pencil mark
-7.5 + 3.01
Different signs subtract
Bigger team wins
-7.50
+3.01
-4.49
Ana worked 6 ½ hr
on Monday, 5 ¾ hr
on Tuesday and 7 1/6 hr on
Friday. How many total hours
did she work these three days?
6 1
2
5 3
4
1
7
6
18
= 6
12
= 9
12
= 2
12
17
12
=
19
5
12