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Adding integers (1) blocks
Contributed by: Mathematics
(Original author: Smith)
These blocks total
Each  blue block
represents 
+1
?
 +4
?
+3
?
+2
?
These blocks total 
     (+2)+(+3)=
+5
?
+5
+
3
 −2
−8
+2
+8
These blocks total 
Each red block
represents 
-1
?
-4
?
-3
?
-2
?
These blocks total
     (-2)+(-3)=
-5
?
-
−5
4
 −1
−9
+9
+1
-
−5
2
−3
−7
+3
+7
+1
?
-1
?
When the amount of blue and red blocks
are equal, the result is ZERO

(+1)+(-1)=
0
?
+3
?
-3
?
When the amount of blue and red blocks
are equal, the result is ZERO

(+3)+(-3)=
0
?
a
c
All answer choices equal zero except one.
Which choice does NOT equal zero?
d
b
a
c
All answer choices equal zero except one.
Which choice does NOT equal zero?
d
b
a
c
All answer choices equal zero except one.
Which choice does NOT equal zero?
d
b
These blocks total 
     (+3) + (-2) = 
If there are more blue (positive) blocks
than red (negative) blocks, the result
is POSITIVE
-2
?
+3
?
+1
?
a
c
All answer choices equal +2 except one.
Which choice does NOT equal +2?
d
b
a
c
All answer choices equal +3 except one.
Which choice does NOT equal +3?
d
b
a
c
All answer choices equal +1 except one.
Which choice does NOT equal +1?
d
b
+
−2
 +2
−2
4
+6
-6
+
−2
 +3
−3
5
+7
-7
−3
+
 +8
−8
5
+2
-2
These blocks total
     (-5) + (+3) =
+3
?
-5
?
If there are more red (negative) blocks
than blue (positive) blocks, the result
is NEGATIVE.
-2
?
a
c
All answer choices equal -3 except one.
Which choice does NOT equal -3?
d
b
a
c
All answer choices equal -2 except one.
Which choice does NOT equal -2?
d
b
a
c
All answer choices equal -1 except one.
Which choice does NOT equal -1?
d
b
+
−5
 −1
−9
4
+1
+9
+
−5
 −1
−3
2
-2
+3
+
−5
 −1
+1
1
-4
+4
+
−5
 −1
−9
4
+1
+9
finito
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