Multiplication
What is a good estimate for product of 2.75 x 1.8
a. 300 x 20 = 6,000
b. 30 x 2 = 60
c. 3 x 2 = 6
d. 3 x .2 = .6
c. 3 x 2 = 6
Solve: 0.25 x 7.7
1.925
What is the place value of the 6 in the number 2,345.76 ?
The hundredths place
What is the next step in this problem? (on slides)
add a decimal, bring it up to the quotient, and drop down the zero.
Solve: 584 ÷ 8
70.5
Where should the decimal be placed for the problem 1.08 x 3.2 if the product's digits are 3456?
3.456
Solve: 7.8 x 0.89
6.942
What is the value of the digit in the hundreds place in the number 3,829.34
800
How do you know when you are done solving a long division problem?
The last number at the bottom of the problem is a zero AND there are no more digits in the dividend.
164.45 ÷ 13
12.65
Sam says when multiplying 3.02 by .12, he had to multiply by 100 to make both numbers whole. When Sam solved for the product of 302 x 12, he got an answer of 3624. Since Sam started by multiplying by 100, he divided by 100 to get an answer of 36.24. Do you agree with Sam? Why or why not?
No, I do not agree with Sam. He multiplied both numbers by 100, so he really multiplied by 10,000. This means he should have divided by 10,000 and the product is 0.3624.
Solve for the product of 26.7 and 71
1895.7
divide by 100
Select all of the questions below that will have the same answer as 240 ÷ 12
a. 240 ÷ 1.2
b. 24 ÷ 1.2
c. 2.4 ÷ 12
d. 0.24 ÷ 0.012
e. 120 ÷ 6
b, d, e
93.38 ÷2.03
46