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## PowerPoint Slideshow about ' Word Problems' - marilu

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- Objective: Students will solve word problems involving decimals.
- Standard: NS 2.1 Add, subtract, multiply, and divide with decimals, and verify the reasonableness of the results.

Decimal Poem decimals.

Decimal point, decimal point,

where do you go?

In addition and subtraction,

You line up in a row.

When we multiply decimals,

We count their places,

Put a decimal in the product,

Counting right to left spaces.

Decimal point, decimal point,

Where do you go?

A decimal in the quotient,

Aligns with the dividend below.

Warm Up decimals.

- On your whiteboards, find solutions to the following problems:
459.8 – 12.34

24.67 X 1.8

0.63 ÷ 0.07

1.92 + 26

447.46

44.406

9

27.92

Center Directions decimals.

- You will be working in groups to solve a word problem.
- You will need to complete the worksheet for each problem.
- You will have 12 minutes at a center, then rotate to the next center.
- Your group will be responsible to present your solutions to the class.

Group Norms decimals.

- Listen to each other’s ideas.
- Respect everyone’s opinion by asking for clarification.
- Politely agree or disagree.
- Investigate together and stay on task.
- Make sure everyone in your group can explain your group’s thought process.

Watch Me decimals.

- Homer bought 3 small bags of potato chips that cost 69 cents each. How much did they cost altogether?
- $2.07

Group Norms decimals.

- Listen to each other’s ideas.
- Respect everyone’s opinion by asking for clarification.
- Politely agree or disagree.
- Investigate together and stay on task.
- Make sure everyone in your group can explain your group’s thought process.

#1 decimals.

- Maria had $4.65 in nickels. How many nickels did she have?
- She has 93 nickels.

#2 decimals.

- Max and Moe each timed his own quarter-mile run with a stopwatch. Max says that he ran the quarter in 74.5 seconds. Moe is more accurate. He reported his run as 81.34 seconds. How many seconds faster did Max run than Moe?
- Max ran 6.84 seconds faster than Moe.

#3 decimals.

- Lexi has $25 to buy workout clothes. She needs to buy a pair of gym shorts for $7.95, a long-sleeved t-shirt for $8.29, and a pair of crew socks for $3.50. Does Lexi have enough money to pay for all three items? If so, how much change will she get back? (All items include sales tax.)
- Yes, Lexi has enough money. She has $5.26 left.

#4 decimals.

- The price of an ant farm is twenty-eight dollars. The cash register multiplies the price by 1.07 to find the total cost including tax. What is the total cost of the ant farm?
- The total cost of the ant farm is $29.96.

Ticket Out the Door decimals.

- It costs 33 cents to mail a letter and 20 cents to mail a postcard. Maria is going to the post office to mail two letters and three postcards. She has $2 to spend. Does she have enough money? If so, how much change will she get back?

#1 decimals.

- Maria had $4.65 in nickels. How many nickels did she have?

#2 decimals.

- Max and Moe each timed his own quarter-mile run with a stopwatch. Max says that he ran the quarter in 74.5 seconds. Moe is more accurate. He reported his run as 81.34 seconds. How many seconds faster did Max run than Moe?

#3 decimals.

- Lexi has $25 to buy workout clothes. She needs to buy a pair of gym shorts for $7.95, a long-sleeved t-shirt for $8.29, and a pair of crew socks for $3.50. Does Lexi have enough money to pay for all three items? If so, how much change will she get back? (All items include sales tax.)

#4 decimals.

- The price of an ant farm is twenty-eight dollars. The cash register multiplies the price by 1.07 to find the total cost including tax. What is the total cost of the ant farm?

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