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(*) Multiplying Two Numbers Greater
Than 100, But Close To 100:
A.
From algebra we learn:
(100 + a) (100 +
b) = 100(100 + a + b) + ab
B.
Using numbers instead of variables we get the following:
1.
Multiply the one’s digits together. Write this number down (make sure
that it takes up 2 place values).
2.
Add the one’s digits together. Write
the result (make sure that it takes up 2 place values).
3.
Write 1.
Ex [1]
104 x 102 =_________.
a)
4 x 2 = 8. Write 08 to take
up 2 place values.
b)
4 + 2 = 6. Write 06 to take
up 2 place values.
c)
Write 1.
d)
The answer is 10608.
Ex [2] 1062 =_________.
a)
6 x 6 = 36. Write 36.
b)
6 + 6 = 12. Write 12.
c)
Write 1.
d)
The answer is 11236.
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