After plotting 0 on a number line and making our first ray towards the first integer, explain what you would do next with the second integer.
Starting at the end of the ray where the first integer is, we will count up or back (if negative) the number of the second integer (NOT TO it).
35 ÷ 7
5
(-27) - (-47)
20
-192 ÷ -16
12
(-16) + (-52)
-68
82 - (-99)
181
126 ÷ 18
7
-20 x -20
400
6 x -17
-102
(-78) + 49
-29
(-42) - 85
-127
(-23) - (-25)
2
(-43) + (-98)
-141
(-59) + 14
-45
33 - (-48)
81
(-85) + 24
-61
(-41) + (-100)
-141
182 ÷ 14
13
(-46) + 40
-6
Find the value of (-8)(-7).
56
(-37) + (-59)
-96
(-42) + (-86)
-128
After plotting 0 on a number line, we then move in the direction of the FIRST or SECOND integer?
First integer
(-70) - (-26)
-44
13 x -18
-234
(-96) + (-84)
-180
(-98) + 65
-33
(-81) + (-43)
-124
(-94) + 91
-3
(-15) + (-90)
-105
When using a number line, where should we always plot the first point?
At 0
Mike completes the sum as shown: -177 + 55 = 122. Is Mike correct? Why or why not?
No. When adding, Mike can subtract the absolute values since the addends have opposite signs, keeping the sign of the number with a larger absolute value.
8 x -18
-144
68 ÷ -17
-4
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