I have 4 chocolate chip cookies with 10 chocolate chips in them. And 18 fudge cookies with 5 chocolate chips in them. How many chocolate chips do I have?
Let’s see 4 times 10 = 40, and 18 times 5 = 90. So now I have to add both of them, 90 plus 40 = 130. I have 130 chocolate chips! I have enough for a party! But first I have to go to the bakery and get party treats.
In the bakery, there are 8 people. Five groups of 4 people enter, and then three groups of 2 people leave.
To find out how many people are in the bakery I have to evaluate the expression 8+5(4)-3(2)
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Let's see 5x4=20, so the expression= 8+20-3(2). Then 3x2=6. So now the expression= 8+20-6. Which =28-6. Which = 22. So there are 22 people in the bakery.