Comparing Decimals
Does 541.9 = 541.90?
Yes
What number can you add behind the decimal point at the end of any number, like 6.4_ and not change its value?
0
3.42 + 5.57
8.99
0.7 • 0.3
1.38 ÷ 6
0.23
Which number is greater?
27.601 or 27.621
27.621
When adding and subtracting decimals, what do we need to do with the decimal?
Line up the decimals
67.89 - 9.68
58.21
1.6 • 0.08
0.128
18.4 ÷ 2.3
8
Which number is greater?
355.06 or 355.602
355.602
When multiplying decimals, how do we know how many decimal places are in the product?
Count the total number of places behind the decimal in each factor being multiplied and the product must have that same number.
Evaluate 3.5 + x for x=45.63
49.13
2 • 0.006
0.012
Evaluate 0.732 ÷ x for x=0.06
12.2
Order these numbers from least to greatest:
14.08, 13, 14.8, 13.2,
13, 13.2, 14.08, 14.8
When dividing, which number goes on the inside, the first or the second number?
First number
23 - 7.06 =
15.94
Evaluate 6x for x=6.23
37.38
96.6 ÷ 0.42
230
Order these numbers from least to greatest:
4.625, 4.8, 4.62, 4.607
4.607, 4.62, 4.625, 4.8
When dividing decimals by decimals, which number has to be a whole number, the inside or the outside number?
Outside number
In a diving competition, Jack received the following scores: 8.765, 9.45, 9.875, and 8.025. What was Jack’s total score?
36.115 points
Tessa walks her dog every day. If she walks 2.25 miles each day, how many miles will she have walked in 5 days?
11.25 miles
Ben’s family drove 329.44 miles to get to the Grand Canyon. Ben calculated that the car averaged 28.4 miles per gallon of gas. How many gallons of gas did the car use?
11.6 gallons of gas