Explain how you could mentally find 8×45 by using the distributive property

Mathematics

2 answers:

Pachacha [2.7K]3 years ago

4 0

8 x 45 = (8 * 40) + (8 * 5) ...now that can be done mentally

Lena [83]3 years ago

4 0

8(50-5) = 400 - 40 = 360
use compatible numbers.
you have to apply the distibtive poperty
8 x 45.
leave the 8
split 45 into tow numbers that add up to 45
40 and 5.
multiply each number by 8
8 x 40 + 8 x 5.
320 + 40
when you add both it will be 360

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