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Taking the Words Out of Word Problems. How to turn word problems into math problems Part 2: Subtraction problems. The Steps. Read the entire problem first. Identify the people in the problem. Identify their stuff Draw unit bars
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Taking the Words Out of Word Problems • How to turn word problems into math problems • Part 2: Subtraction problems
The Steps • Read the entire problem first. • Identify the people in the problem. • Identify their stuff • Draw unit bars • Read the problem again, one bit at a time, and label the unit bars. • Determine the question and illustrate it on the unit bar • Compute the problem • Write the answer as a complete sentence
Subtraction problems are also simple. Let’s work through a problem together.
Rule - Read the red text Subtraction problems are also simple. Let’s work through a problem together.
Rule - Write down the green Subtraction problems are also simple. Let’s work through a problem together.
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend?
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Read the entire problem first
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Identify the people in the problem
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Jose
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Jose Identify their stuff
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Jose’s Money
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Jose’s Money Draw Unit Bars
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? Jose’s Money Draw Unit Bars
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S Jose’s Money
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S Jose’s Money Read the problem again, one bit at a time, and label the unit bars.
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S Jose’s Money 40 Read the problem again, one bit at a time, and label the unit bars.
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S Jose’s Money 40 13
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S Jose’s Money 40 13 Determine the question, and illustrate it on the unit bar
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S ? Jose’s Money 40 13
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S ? Jose’s Money 40 13 Compute the problem
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S ? Jose’s Money 40 13 40 - 13 = 27
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S ? Jose’s Money 40 13 40 - 13 = 27 Write the answer as a complete sentence
Jose went to the swap meet with $40. He had $13 left when he came home. How much did he spend? L S ? Jose’s Money 40 13 40 - 13 = 27 Jose spent $27.
Now that we’ve seen how it works, lets use a slightly more complicated example.
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have?
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Read the entire problem first
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Identify the people in the problem
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana Sylvia
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana Sylvia Identify their stuff
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers Sylvia’s Stickers
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers Sylvia’s Stickers Draw Unit Bars
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers Sylvia’s Stickers Draw Unit Bars
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers Sylvia’s Stickers
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers Sylvia’s Stickers Read the problem again, one bit at a time, and label the unit bars
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers Read the problem again, one bit at a time, and label the unit bars
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 56 Read the problem again, one bit at a time, and label the unit bars
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 37 56
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 37 56 Determine the question, and illustrate it on the unit bar
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 37 56 ? Compute the problem
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 37 56 ? 56 - 37 = 19
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 37 56 ? 56 - 37 = 19 Write the answer as a complete sentence
Diana has 37 stickers. Sylvia has 56 stickers. How many more stickers than Diana does Sylvia have? Diana’s Stickers 37 Sylvia’s Stickers 37 56 ? 56 - 37 = 19 Sylvia has 19 more stickers than Diana does.
Now, try it on your own. We’ll still have the hints, and we’ll verify every step.
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have?
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have? Read the entire problem first
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have? Identify the people in the problem
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have? Robert
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have? Robert Identify their stuff
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have? Robert’s M&Ms Robert’s Skittles
Robert has 46 M&Ms and 28 Skittles. How many more M&Ms than Skittles does he have? Robert’s M&Ms Robert’s Skittles Draw unit bars