Exponent/Decimal Grids
True or False?
3.5 x 103 = 3.5 x 10 x 10 x 10
True
What is 0.89 rounded to the nearest whole number?
1
What should these numbers be in the area model: 3.4 x 6.2
3, 0.4, 6, and 0.2
I have 2 stamps. Each stamp costs $0.45. How much money do I need for the stamps?
$0.90
15 x 15 = 225
1.5 x 15 = ?
22.5
What is 2.4 x 102 ?
240
True or False?
2.48 would round to 3.
False
True or False?
In an area model, 4.5 would be 45 and 1.
False
Jackie makes 18 cookies. Each cookie has 0.5 pounds of sugar. How much sugar does she need to make all the cookies?
9 pounds
74 x 12 = ?
7.4 x 12 = 88.8
888
Jack ran 2.1 x 102 steps. How many steps did he run?
210 steps
A garden is 5.4 feet wide and 2.7 feet long. What is the best estimate for the area of the garden?
15 ft2
Solve 1.2 x 1.5 using an area model.
1.8
Blake lines up 12 pencils. Each pencil is 6.8 centimeters long. How many centimeters long is the line of pencils?
81.6 centimeters
True or False?
45 x 16 = 720
so 4.5 x 1.6 = 7.2
True
Use a decimal grid to solve 6 x 0.3.
0.18
Each pencil costs $1.75. About how much does it cost for 5 pencils?
$10
What sum is equivalent to 3.8 x 0.4?
1.2 + 0.32 or 38 + 4
1.2 + 0.32
Sharon has 4.5 pieces of cake. Her brother has 4 times as many. How many pieces of cake does her brother have?
18 pieces of cake
What is the product? Use place value patterns to solve.
45 x 19 = 855
4.5 x 19 = ?
4.5 x 1.9 = ?
85.5 and 8.55
What equation does the decimal grid show (see photo)?
0.3 x 0.2 = 0.06
Find the range for 3.1 x 8.6
Between 24 and 36
Solve 8.5 x 3.2 using an area model.
27.2
A dog eats 1.5 treats a day. About how many treats does the dog eat in 7.5 days?
About 16 treats
What are the products?
12 x 14 = ?
1.2 x 14 = ?
1.2 x 1.4 = ?
168, 16.8, 1.68