Exponents
Rewrite 7 x 10 x 10 x 10
7 x 103
7 x 1000
70 x 100
700 x 10
761 x 3
2,283
Round 6,143 to the nearest hundred
6,100
Which is equivalent to 5 x 0.7?
A. 0.7 x 0.7 x 0.7 x 0.7 x 07
B. 5 x 7
C. 5 x 7 x 0.1
A!
If Ms. Kirk gives 10 kids $1.30 how much money will she give out?
$13.00
Write the exponential form and value of
10 x 10 x 10 x 10 x 10
105
100,000
6,415 x 2
12,830
Round 4.573 to the nearest hundredth
4.570
Use repeated multiplication to solve 5 x 0.2
0.2 x 0.2 x 0.2 x 0.2 x 0.2=
1
On Tuesday Blart weighed 9.5 pounds. On Thursday she weighed 0.26 times as much as she did on Tuesday. Did she weigh more on Tuesday or Thursday?
Tuesday!
Will .1 x 2.5 be greater or less than 2.5?
Less than!!
68 x 13
884
Estimate:
4.36 x 5.76
24
25.52
8.3 x 100
830
Timmy Von Billy saves $29 each month. He estimates that he will have saved more than $300 in 12 months. Is Timmy Von Billy's estimate reasonable? Explain.
Yes.
30 x 10 = 300, and 12 is greater than 10.
Write the product:
5 x 103
5,000
24 x 52
1,248
When you multiply 56.7 by 10 is the product greater or less than 56.7?
Why?
Greater, multiplying by 10 makes it 10 times as big!
Use powers of 10 to find 36 x 0.35
36 x 0.35 = 36 (35 x _____)
36 x 0.35 = 1,260 x ______
36 x 0.35 = ________
36 x 0.35 = 36 (35 x .01)
36 x 0.35 = 1,260 x .01
36 x 0.35 = 12.60
Ava spends $6 dollars everyday on coffee. How much will she spend on coffee in 1 month (30 days).
$180
94 x 0.01
.94
94 x 48
4,512
When you multiply 23.9 by .01, is the product greater than or less than 23.9? Explain.
Less than!
It is .1 times as big, or 10 times as small.
4 x 2.3
9.2
Ms.Kirk shoots 7 goals playing soccer at recess every day. In a week at school how many will she score?
7 x 5 = 35