Fluently Add and Subtract Within 20
Elementary School Math · Flashcards · Application
ELEMENTARY SCHOOL MATH · FLASHCARDS
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QUESTION
What is
9
+
6
9 + 6
9
+
6
?
QUESTION
What is the difference
12
−
4
12 - 4
12
−
4
?
QUESTION
What is the sum of
9
+
8
9 + 8
9
+
8
?
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ANSWER
17
17
17
. Near doubles:
8
+
8
=
16
8 + 8 = 16
8
+
8
=
16
, so
9
+
8
=
17
9 + 8 = 17
9
+
8
=
17
.
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