Patterns of multiplying
3.8 is ___ of 38
1/10
What is 104?
10,000
Round 1.50 to the nearest whole number
2
Find the low and high of the range of 3.42x9.72
Low: 3x9 High: 3x10
Between 27 and 30
What is the product of 80x0.8?
64
3.8x25 is ____ of 38x25
1/10
What is the value of 3.4x102?
Round 2.67 to the nearest tenth
2.7
Estimate the range of 20.11 x 9.96
20x9=180
21x10= 210
Range: 180-210
What is the product of 8.0x0.8?
6.4
Is the statement true or false?
0.23 x 71 is 163.3
False
Knowing that 6.5x102=650, what is the value of 6.5x104
A) 650
B) 6,500
C) 65,000
D) 650,000
C. 65,000
What is 5.55 rounded to the nearest hundredth
5.55
What are 2 expressions that could be used to find the range of 62.51x3.53
62x3 and 63x4
What is the product of .9x 0.8?
0.72
Use place value to solve
34x 53=1,802
34x5.3=
34x0.53=
1,802, 180.2, 18.02
Use the pattern to help solve
6.5x102=650
6.5x103=
6.5x104=
650, 6,500, 65,000
True or False: 8.97 rounded to the nearest hundredth is 8.97
True
What are reasonable estimates; Choose ALL that apply
A) 5.3x3.1 is about 15
B) 6.8x4.13 is about 28
C) 9.4x75.2 is about 750
D) 15.2x6.9 is about 105
E) 14.9x28.4 is about 392
Correct answers: A, B, D
What is the product of 0.8x2.3
1.84
Fill in the blank
_ x 16=1,536
9.6 x 16= 153.6
9.6x ___ = 15.36
0.96x 1.6= ____
96, 1.6, 1.536
Rosa hiked 1.3x103 meters before stopping for water. Alvin hiked 9.4x102 meters before stopping for water.
Who hiked farther before stopping? HOW do you know?
Rosa hiked farther because 1.3x103=1,300 meters and Alvin hiked 9.4x102=940
1,300>940
True or False: 5.50 rounded to the nearest tenth is 5.51
False; it rounds to 5.5
Anna has $40 to spend on downloading music. If each song costs $1.29, does she have enough to get 16 songs?
Yes; 1.29 is between 1 and 2. If I do 16x2=32 so she can get 16 songs that cost less than $40
What is the product of 8.0x2.3
18.4