Show:
Adding Decimals
Subtracting Decimals
Multiplying Decimals
Dividing Decimals
Estimating Products and Quotients
100
45.35 + 32.1?
What is 47.45
100
28.7 - 22.4?
What is 6.3
100
1.4 x 2.5?
What is 3.5
100
9.8 divided by 2?
What is 4.9
100
Why is it helpful to estimate an answer before solving it?
What is it will help us know if our answer is reasonable or close to being right.
200
23.41 + 34?
What is 57.41
200
The most important thing to remember when subtracting decimals?
What is line up the decimal points!
200
0.06 x 1.4?
What is 0.084
200
36.8 divided by 2?
What is 18.4
200
Estimate: 14.7 x 3.6
What is 15 x 4 = 60
300
The most important thing when adding decimals?
What is line the decimal points up!
300
86.4 - 13.5?
What is 72.9
300
3.4 x 5.6
What is 19.04
300
When dividing by a decimal, the number outside the "house" must be a ______________ number.
What is whole
300
Estimate: 32.3 x 10.54
What is 32 x 10 = 320 or 30 x 10 = 300
400
48.65 + 16.458?
What is 65.108.
400
50 - 25.5?
What is 24.5
400
Lining of the decimal points is necessary or not necessary for multiplication problems?
What is not necessary?
400
4.5 divided by 3.6?
What is 1.25
400
Estimate: $65.30 divided by 7.95
What is 64 divided by 8 = 8
500
127.01 + 4.1?
What is 131.11
500
42.5 - 34.59
What is 7.91
500
3.8 x 7.2?
What is 27.36
500
When moving the decimal point on the "outside" 1 spot, I also need to...
What is move it on the "inside" 1 spot.
500
Estimate: 104 divided by 24.23
What is 100 divided by 25 = 4