Solve two-step word problems involving multiplication & division and assess the reasonableness of

answersOr

Solve word problems where you have to do two things & decide whether

your answer makes sense.

MATH UNIT 1 LESSON 20

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Skip Count by 5 Sprint

Skip Count By 4s To 40 … in

Italiano! 4 8 12 16 20 24 28 32 36 40

Skip Count by 6s to 42… en Español 6 12 18 24 30 36 42

Skip Count by 3s to 30 … in British 3 6 9 12 15 18 21 24 27 30

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Red, orange, and blue scarves are on sale for $4 each. Nina buys 2 scarves of each color. How much does she spend altogether?

Problem of the Day!

R R O O B B

Step 1: 2 + 2 +2 = 6Step 2: 6 x $4 =$24

$4

?

Red, Orange, and blue scarves are on sale for $4 each. Nina buys 2 scarves of each color. She also buys a hat that costs $4. How much does she spend altogether?

How is this like the problem of the day?

How is it different?

Concept Development

Concept Development

R R O O B B

Step 1: 6 x $4 = $24

$4

24

Concept Development

Now we add the hat:1 hat x $4

H

Concept Development

R R O O B B

Step 1: 6 x $4 = $24

Step 2: $24 + $4 = $28

Which is the same as

what multiplication problem?

7 x $4 = $28

The hat & scarves cost $28.

Let’s try it again!

Concept Development

Mr. Lim buys 7 plants for his garden. Each plant costs $5. The next day he buys a rose bush that also costs $5. How much more do the 7 plants cost than the rose bush?

How is this like the last problem?

How is it different?

Concept Development

Concept Development

Step 1: 7 x $5 =$35

Step 2: $35 - $5 = $30

Which is the same as

what multiplication problem?

6 x $5 = $30

The plants cost $30 more than the rose bush.

Mr. Lim buys 7 plants for his garden. Each plant costs $5. The next day he buys a rose bush that also costs $5. How much more do the 7 plants cost than the rose bush?

Our answer was $30 more.

Does this answer make sense?Why or Why Not?

Concept Development

10 children equally share 40 almonds.

How many almonds will each child get?

With your neighbor model & solve the problem, then we’ll share our answers.

Partner Problem

Problem Set 20!

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