How do you know how many marbles are in the race?.

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Presentation transcript:

How do you know how many marbles are in the race?

In this lesson you will learn how to solve two-step word problems by completing all of the steps.

Let’s Review We need to read and think about each part of a two-step word problem. There are 14 blue marbles and 22 green marbles in the race. Lilly put in 9 more marbles. How many marbles are in the race? There are 14 blue marbles and 22 green marbles in the race. Lilly put in 9 more marbles. How many marbles are in the race? There is more than one step to compete the problem.

Core Lesson There are 14 blue marbles and 22 green marbles in the race. Lilly put in 9 more marbles. How many marbles are in the race? 1422 What is the first step?

A Common Misunderstanding There are 14 blue marbles and 22 green marbles in the race. Lilly put in 9 more marbles. How many marbles are in the race? Not completing both parts of a two- step word problem. 1422

Core Lesson What is the second step? There are 14 blue marbles and 22 green marbles in the race. Lilly put in 9 more marbles. How many marbles are in the race?

Core Lesson How many marbles are in the race? = =45 Do we need to add or subtract?

Core Lesson There were 45 marbles in the marble race. Lilly took 22 marbles out of the race. Then Zim took 6 more marbles out. How many marbles are left in the race? There were 45 marbles in the marble race. Lilly took 22 marbles out of the race. Then Zim took 6 more marbles out. How many marbles are left in the race? What if we took marbles out? 45 Do we need to add or subtract? - 22 = = 17

How did you know how many marbles were in the race? We completed all the steps in the word problems.

In this lesson you have learned how to solve two-step word problems by completing all of the steps.