Explain Addition and Subtraction Strategies
2nd Grade Math · Flashcards
2ND GRADE MATH · FLASHCARDS
Card 1
of 57
0 got it
0 to review
Current
Got it
Still learning
Not seen
QUESTION
What is the identity property of addition shown by
52
+
0
=
52
52 + 0 = 52
52
+
0
=
52
?
QUESTION
What property is shown by
7
+
0
=
7
7 + 0 = 7
7
+
0
=
7
?
QUESTION
What is
46
+
27
46 + 27
46
+
27
using tens and ones:
(
40
+
6
)
+
(
20
+
7
)
(40+6) + (20+7)
(
40
+
6
)
+
(
20
+
7
)
?
Tap to flip before you grade
ANSWER
73
73
73
.
(
40
+
20
)
+
(
6
+
7
)
=
60
+
13
=
73
(40+20)+(6+7)=60+13=73
(
40
+
20
)
+
(
6
+
7
)
=
60
+
13
=
73
by regrouping
13
13
13
as
1
1
1
ten
3
3
3
ones.
Swipe → got it · swipe ← still learning
Got it
Still learning
Flip Card
Previous card
Next card