ACT Math 1.1 Pre-Algebra

Pre-Algebra Drill 1, Problem 1. Calculate 2³ + 5³(7 – 4).

ACT Math	Pre-Algebra
ACT Mathematics	Pre-Algebra
Foreign Language	Arabic Subtitled Chinese Subtitled Korean Subtitled Spanish Subtitled
Language	English Language
Pre-Algebra	Exponents and roots Numbers raised to positive integer powers The concept of exponents
Product Type	ACT Math

00:22

See, like this thing.

00:24

Like... Mary's Violet Eyes Made John Stay Up Nights Pining.

00:31

So... this problem tests whether we can actually use the PEMDAS mantra.

00:35

First we deal with the parentheses and get 7 minus 4 is 3...

00:40

Then we take care of the exponents... 2 to the 3rd is 2 times 2 times 2,

00:43

which is 4 times 2, which is 8... which is great.

00:48

And 5 cubed is 5 times 5 times 5, which is 25 times 5, which is 125.

00:55

So now we have a mere multiplication problem -- 8 plus 125 times 3.

01:00

Since 125 times 3 is the "M" part of PEMDAS, we have to do it before doing any addition...

01:07

...and we get 125 times 3, which equals 375.

01:13

Now add 8 to get 383.

01:15

And the answer is... C.

01:15

As in "Chocolate tastes like History."