MATH UNIT 1 LESSON 20 Solve two-step word problems involving multiplication & division and assess the reasonableness of answers Or Solve word problems.

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Presentation transcript:

MATH UNIT 1 LESSON 20 Solve two-step word problems involving multiplication & division and assess the reasonableness of answers Or Solve word problems where you have to do two things & decide whether your answer makes sense.

Skip Count by 5 Sprint Click to Start! Once you get the thumbs up – click the screen again and a timer will start. It will chime when the timer is up. 

Skip Count 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

Problem of the Day! Red, orange, and blue scarves are on sale for $4 each. Nina buys 2 scarves of each color. How much does she spend altogether? $4 R O B ? Step 1: 2 + 2 + 2 = 6 Step 2: 6 x $4 = $24

Concept Development 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 $4 R O B 24 Step 1: 6 x $4 = $24

Concept Development Now we add the hat: 1 hat x $4

Which is the same as what multiplication problem? Concept Development R O B H The hat & scarves cost $28. Which is the same as what multiplication problem? 7 x $4 = $28 Step 1: 6 x $4 = $24 Step 2: $24 + $4 = $28

Concept Development 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?

Which is the same as what multiplication problem? Concept Development The plants cost $30 more than the rose bush. 6 x $5 = $30 Which is the same as what multiplication problem? Step 1: 7 x $5 = $35 Step 2: $35 - $5 = $30

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? Our answer was $30 more. Does this answer make sense? Why or Why Not?

Partner Problem 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.

Show what you know! Problem Set 20!