willowtree10290
willowtree10290
26-07-2017
Mathematics
contestada
Find 93 • 87 using mental math.
Respuesta :
ericforteza001
ericforteza001
03-08-2017
Okay so start with multiplying 93 * 7
So 3 x 7= 21
9 X 7 +63, carry the 2 = 651
Then 8 x 93
Remember that first is a zero.
8 X 3= 24
8 X 9= 72, carry the 2= 74
So that is 7440
Now
0651
+7440
8091
And that's the answer
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