Disks with Place Value Chart
2 copies of 4 tenths.
All members of your group must try the place value chart.
0.4x2 = 0.8
8 tenths or 0.8
Draw an area model to solve 4x6.79. All members of your group must show a correct area model.
27.16
2.13 x 2 =
4.26
Choose a reasonable product.
2.1x3 =
6
Mrs. Steele wants to buy 8 protractors and some rulers for her classroom. She has $30. If protractors cost $2.65 each, how much money will she have left to buy her erasers? Explain your answer.
The protractors will cost $21.20. Mrs. Steele only has $30 total, so she'll have $8.80 left.
3 times 5 hundredths
All members of your group must try the place value chart.
0.05x3 = 0.15
15 hundredths or 0.15
Draw an area model to solve 6x4.27. All members of your group must show a correct area model.
25.62
3.32 x 3 =
9.96
Choose a reasonable product.
4.27x6 =
24
Emre is building a spice rack with 4 shelves that are each 0.55 meter long. At the hardware store, Emre sees that he can only buy shelving in whole meter lengths and not decimals. How many meters of shelving does Emre need to buy so that he has enough? Explain your answer.
He will need to buy 3 meter long of shelving.
0.55x4 is 2.20, but Emre can't buy shelving in decimal lengths. So he'll need to buy 3 meter long.
9 times as much as 7 tenths
All members of your group must try the place value chart.
0.7x9 = 6.3
6 and 3 tenths or 6.3
Draw an area model to solve 3x2.1. All members of your group must show a correct area model.
6.3
4.52 x 4 =
18.08
Choose a reasonable product.
9x4.82
45
The poetry club had it's first bake sale, and they made $79.35. The club members are planning to have 4 more bake sales. Billy said, "If we make the same amount at each bake sale, we'll earn $3,967.50." Iris said, "No way, Billy! We'll earn $396.75 after five bake sales."
Use estimation to help Iris explain why Billy's reasoning is incorrect.
$79.35 can be rounded or estimated to be $80.
$80x5 is $400.
$396.75 is much closer to $400 than to $3,967.50, so Billy's reasoning is incorrect.
9 copies of 3 ones and 65 hundredths
All members of your group must try the place value chart.
3.65x9 = 32.85
32 ones and 85 hundredths or 32.85
Draw an area model to solve 9x4.82. All members of your group must show a correct area model.
43.38
7.64 x 4
30.56
Choose a reasonable product.
3x6.33 =
18
Yuahn is painting his storage shed. He buys 4 gallons of white paint and 3 gallons of blue paint. Each gallon of white paint costs $15.72, and each gallon of blue paint is $21.87. How much will Yuahn spend on paint?
He will spend $128.49 on paint.
3 times 20 ones and 175 thousandths
All members of your group must try the place value chart.
3x20.175= 60.525
60 and 525 thousandths or 60.525
Draw an area model to solve 7x6.053. All members of your group must show a correct area model.
42.371
9.89 x 9 =
89.01
Choose a reasonable product.
7x6.053 =
42
Amal rides her bicycle to school and back every Tuesday and Thursday. She lives 3.62 kilometers away from school. Amal's parents want to know about how many kilometers she bikes in a week. The school needs to know exactly how many kilometers Amal bikes in a week.
What should Amal tell her parents?
3.62x4 = 14.48
Since her parents want an estimate, Amal can tell them that she bikes about 14km every week.