Decimal Patterns
What direction do you move the decimal when dividing by powers of 10?
Move the decimal to the left by what the power is.
48.9 / 4
50 / 5 = 10
4.71 / 3
1.57
4.56 / 0.04 =
114
136.5 / 10
13.65
17.7 / 3.2
18 / 3 = 6
247.5 / 50 =
4.95
2.56 / 0.04 =
64
753 / 100 =
7.53
44.07 / 6.3
42 / 6 =7
39.6 / 12=
3.3
How many times do you move the decimal point for the dividend and divisor?
They are moved the same amount of times.
8,100 / 10^4 =
0.81
92.02 / 4.8
90 / 5 = 18
Abby wants to know the value of n in the equation 7.913 x n = 791.3
What is the value of n?
n = 100
4.75 / 0.25 =
19
15.7 / 1,000
0.0157
What are the two ways you can estimate?
2.38 / 7 =
0.34
17.25 / 0.03 =
575