Lesson 4.1
2.07 x1
2.07 x 10
2.07 x 100
2.07
20.7
207
Draw a quick picture to solve.
2 x 0.8
1.6
(check pictures)
9.8 x 6
58.8
84 x 0.24
20.16
(Check model)
5.7 x 0.8
4.56
100 x 49.32
101 x 49.32
102 x 49.32
49.32
493.2
4,932
Draw a quick picture to solve.
3 x 0.33
0.99
(check pictures)
8.42 x 9
75.78
Use expanded form to solve.
13 x 0.54
6.89
(Check Model)
35.1 x 8.4
294.84
1 x 9,670
0.1 x 9,670
0.01 x 9,670
9,670
967
96.7
Draw a quick picture to solve.
5 x 0.71
3.55
(Check quick pictures)
14.05 x 7
98.35
Use expanded form to solve.
17 x 0.52
8.84
(Check model)
2.19 x 6.3
13.797
The length of the titanic was 882 feet. Alvarado's history class is building a model of the titanic. the model is 1/10 of the actual length of the ship. How long is the model?
88.2 feet
Draw a quick picture to solve.
4 x 0.23
0.92
(Check quick pictures)
42.89 x 5
214.45
Use expanded form to solve.
18 x 0.25
4.5
(Check model)
84.5 x 5.5
464.75
John is asked to multiply 0.01 x 18.72. How many places and in which direction should he move the decimal point to get the correct product?
2 places to the left
A tree can grow 0.45 in in one year. At that rate, how much will it grow in 3 years?
Use quick pictures to solve.
1.35 meters
(check pictures)
One pound of grapes cost $3.49. Bob buys exactly 3 pounds of grapes. How much will the grapes cost?
$10.47
Use expanded form to solve.
26 x 7.2
187.2
(Check model)
3.3 x 58.14
191.862