practice1.html

Practice Problems for
Combining Positive and Negative Values

Find the sum or difference:

answers

^-2 + ^-17 =

^-8 + ^-9 =

^-12 + 12 =

^-15 - 8 =

32 - ^-2 =

16 - 20 =

12 + ^-6 - 2 =

5 - 2 + ^-3 =

7 - ^-4 + 7 =

6.2 - 3.1 =

6.4 + ^-1.3 =

3.2 - ^-4 =

13.2 + ^- 13.2 =

-6.3 + - 0.1 =

14.6 + ^- 23.1 =

26.5 - 2 =

26.5 + ^- 2 =

26.5 - ^- 2 =

Write as an addition problem:

answers

3 - 4

7 - ^-6

^-4 - ^-2

-6 - 7

^-17 - ^-12

9 - 14

Solve using tiles method:

answers

[show the tiles and neutral fields]

^-3 - 2 =

6 + 4 =

4 - 2 =

Find the sum or difference, using a number line:

answers

6 + 7 =

3 + ^-2 =

^-4 + ^-4 =

6 + 7 =

3 + ^-3 =

^-2 + ^-5 =

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Answers to Practice Problems


Find the sum or difference: return to problems
^-2 + ^-17 =		^-19
^-8 + ^-9 =		^-17
^-12 + 12 =		0
^-15 - 8 =	^-15 + ^-8 =	^-23
32 - ^-2 =	32 + 2 =	34
16 - 20 =	16 + ^-20 =	^-4
12 + ^-6 - 2 =	12 + ^-6 + ^-2 =	4
5 - 2 + ^-3 =	5 + ^-2 + ^-3 =	0
7 - ^-4 + 7 =	7 + 4 + 7 =	18
6.2 - 3.1 =	6.2 + ^-3.1 =	3.1
6.4 + ^-1.3 =	6.4 + 1.3 =	7.7
3.2 - ^-4 =	3.2 + 4 =	7.2
13.2 + ^- 13.2 =	13.2 + ^-13.2 =	0
-6.3 + - 0.1 =	^-6.3 + ^-0.1 =	^-6.4
14.6 + ^- 23.1 =	14.6 + ^-23.1 =	^-8.5
26.5 - 2 =	26.5 + ^-2 =	24.5
26.5 + ^- 2 =	26.5 + ^-2 =	24.5
26.5 - ^- 2 =	26.5 + 2 =	26.5
Write as an addition problem: return to problems
3 - 4	3 + ^-4
7 - ^-6	7 + 6
^-4 - ^-2	^-4 + 2
-6 - 7	^-6 + ^-7
^-17 - ^-12	^-17 + 12
9 - 14
Solve using tiles method: return to problems	[show the tiles and neutral fields]
^-3 - 2 =		^-5
6 + 4 =		^-10
4 - 2 =		2
Find the sum or difference, using a number line: return to problems
6 + 7 =		13
3 + ^-2 =		1
^-4 + ^-4 =		0
6 + ^-7 =		^-1
3 + ^-3 =		0
^-2 + ^-5 =		^-7

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Find the sum or difference: answers
^-2 + ^-17 =
^-8 + ^-9 =
^-12 + 12 =
^-15 - 8 =
32 - ^-2 =
16 - 20 =
12 + ^-6 - 2 =
5 - 2 + ^-3 =
7 - ^-4 + 7 =
6.2 - 3.1 =
6.4 + ^-1.3 =
3.2 - ^-4 =
13.2 + ^- 13.2 =
-6.3 + - 0.1 =
14.6 + ^- 23.1 =
26.5 - 2 =
26.5 + ^- 2 =
26.5 - ^- 2 =
Write as an addition problem: answers
3 - 4
7 - ^-6
^-4 - ^-2
-6 - 7
^-17 - ^-12
9 - 14
Solve using tiles method: answers
[show the tiles and neutral fields]
^-3 - 2 =
6 + 4 =
4 - 2 =
Find the sum or difference, using a number line: answers
6 + 7 =
3 + ^-2 =
^-4 + ^-4 =
6 + 7 =
3 + ^-3 =
^-2 + ^-5 =