Which of the following expressions shows how to use mental math to find
7
×
27
?
A.
(
7
×
20
)
+
(
7
×
7
)
B.
(
7
×
49
)
+
(
9
×
4
)
C.
(
9
×
50
)
+
(
9
×
7
)
D.
(
9
×
50
)
+
(
7
×
9
)
Part B
The product of
7
×
27
=
Choose...
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o
y
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v
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r
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c
a
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t
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x
t
i
s
?