Learning Gym: Basic Math: Solving Mixed Problems

When you have a real life situation, you don't know ahead of time what kind of math you will need to do to solve a problem. When you have a question like, "How much change will I get back if I owe $43 and I pay with a $50 bill?" you have to figure out that it is a subtraction problem and then set up and do the math: $50 - $43 = $7

Operation Words

4-6

9-10

13-14

17

20-22

For this question: "Andre spent a $50 on a pair of shoes and now has $175 left in his bank account. How much money did he have before he bought the shoes?" 1) What question is the problem asking? How much money was sin his account before he spent part of it. 2) What facts does the problem give? He paid $50 for shoes. The new balance in his account is $175. 3) Are there any word clues in the problem? 4) What do I need to do to get the answer?  We will add the $50 back to the $175.  $50+$175=$225.  Andre had $225 in his account before he paid for the shoes.

7-8

10-12

15-16

18-19

23-29

104 -105 (Solve the problems)

For this question: “Johnny needs to fill up 3 gas tanks that each hold 2 gallons of gas.  If gas is $3 per gallon, how much will he spend to fill up all of the gas tanks?” 1) What question is the problem asking? Cost for 3 gas tanks. 2) What facts does the problem give? Gas is $3 a gallon.  His 3 gas tanks hold 2 gallons each. 3) Are there any word clues in the problem? 4) What do I need to do to get the answer? First you need to find out how many total gallons of gas Johnny is buying. Since he has 3 tanks, and they each hold 2 gallons, you can either add (2+2+2) or multiply (3x2) to get 6 gallons.  To find out how much the 6 gallons will cost, you will multiply: 6 x $3 = $18.  Johnny will spend $18 to fill up all of the gas tanks.

137-141 (Solve the problems)

160-161

21 Exercise 3

22 Exercise 4

26-29 Exercise 2 - Exercise 5