Math Order of operation

Adam has \$450. He spends \$210 on food. Later he divides all the money into four parts and gives three parts to his mom and one part he keeps for himself. Then he found \$20 in one of his Minecraft books being used as a bookmark. Write an expression that shows all of this determine how much money he has left?

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2. 👎 0
3. 👁 905
1. Just write the expression in the order you learn the facts:

He spends \$210: 450-210
he divides all the money into four parts and one part he keeps: (450-210)/4
Here you need the parentheses, because 450-210/4 means that only the 210 is divided into 4 parts.
he found \$20: (450-210)/4+20

(450-210)/4 + 20

Now, to evaluate that, you do need to know the order of operation. Oddly enough, you do them in the same order you wrote them down...

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2. 👎 0
2. 80

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3. 111

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4. 876

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2. 👎 0
5. 1000

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2. 👎 0

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