Word Problems
At my house, I ran out of toilet paper. I placed an order at Costco for 200 more rolls. Each roll costs $1.25. How much did I spent on toilet paper?
$250 on toilet paper
0.8 x 0.8
0.64
How do you know where to place a decimal when multiplying?
Write the product of 6.43 x 10^2 in standard form.
643
I walked my dog a total of 6.7 miles a day. In October, I walked him 23 days. How many miles did I walk my dog?
154.1 miles
Charlie has an adult Netherlands dwarf rabbit that weighs 1.2 kilograms. Cliff's adult Angora rabiit weighs 2.9 times as much as Charlie's rabbit. How much does Cliff's rabbit weigh?
3.48 kilograms
7.9 x 0.4
3.16
How can you model to multiply decimals by decimals?
I can shade columns of one or more decimal square with one color to represent one factor. I can use another color to shade rows of the shaded columns to represent the other factor. Then I can count to find how many small squares are shaded twice.
10 to the power of zero is what number? Why?
1, Ther are no zeros added to my 1
It costs $5.32 to go to the roller rink and $0.95 to rent skates. Mrs. Eitzen bought 4 admission tickets and one set of skates. How much did she spend at the roller rink?
$22.23
Leslie and Paul both solve the multiplication problem 5.5 x 4.6. Leslie says the answer is 25.30. Paul says the answer is 25.3. Whose answer is correct. Explain your reasoning.
Both answers are correct. Leslie's answer shows 30 hundreths, which is the same as the 3 tenths in Paul's answer.
9.2 x 5.6
51.52
If I have a rectangular yard and I know that one side is 4 feet long and the adjacent side is 3.2 feet long, what is the area of my yard?
12.8 feet squared
Bigger, Decimal moves to the right
Julie works at Vala's Pumpkin Patch. She is paid $7.50 per hour for the first 30 hours she works in the week. After 30 hours she is paid 1.4 times that rate for each hour. Julie worked 34.50 hours last week. She says she got paid more than $300. Do you agree? Support your answer.
I do not agree with Julie because she got paid $225 for the first 30 hours and then $47.25 for the last 4.5 hours. The total she got paid was $272.25, which is not over $300.
In a science experiement, Tania uses 0.8 ounce of water to create a reaction. She wants the next reaction to be 0.1 times the size of the previous reaction. How much water should she use?
0.08 ounce
0.09 x 0.2
0.018
To round a decimal to the nearest whole number, which place value should you look at?
The tenths place
17.04 x 10^0 =
17.04 x 10^1 =
17.04 x 10^2 =
17.04 x 10^3 =
17.04
170.4
1,704
17,040
Ruth saves $45.89 each month for 4 months. In the fifth month, he only saves $14.32. How much money will Ruth have saved after 5 months?
$197.88
Michael multiplies 0.2 by a number. He records the product as 0.008. What number did Michael use?
0.04
0.77 x 14.9
11.473
Which direction will your decimal move?
Smaller, to the left
1 x 29 =
0.1 x 29 =
0.01 x 29 =
29
2.9
0.29
Julie spends $5.62 at the store. Micah spends 5 times as mucha s Julie. Jeremy spends $6.72 more thatn Micah. How much money does each person spend?
Julie - $5.62
Micah - $28.10
Jeremy - $34.82