Find the Sum
Comparing & Ordering
Decimals
Rounding Decimals
Find the Difference
Estimating Sums and Differences
100

Add the decimals 22.05 + 52.68.

74.73

100

Use < , > or = to compare each pair of decimals 0.06 ______0.60

<

100

Round the decimal to the given place-value. 5.031; hundredths

5.03

100

Subtract the decimals 43.28 - 31.45

11.83

100

Ricky can either rent a car or fly to see his friends in Florida. What is the approximate difference in prices between the two if you round each price to the nearest TENS?

Flying: $287.98

Car: $156.76

The difference is about:

$130.00

200

Add the decimals 0.724 + 6.45

7.174

200

Use < , >, or = to compare the set of decimals 4.888_______4.880

>

200

Round the decimal to the given place-value. 0.042; hundredths

0.04

200

Subtract the decimals 6.45 - 2

4.45

200

Joey can’t decide between the two toys. About how much is the sum of both toys if you round each price to the nearest ONES?

Toy 1: $9.09

Toy 2: $7.68

The sum is about:

$17.00

300

Add the Decimals 1.32 + 0.081

1.401

300

Use <, >, or = to compare the set of decimals 2.03_____2.030

=

300

Round the decimal to the given place-value. 27.35; tens

30

300

Subtract the Decimals 1.32 - 0.081

1.239

300

Billy has been munching at the baseball game. About how much did he pay for his snacks if you round to the nearest TENTH?

Popcorn: $4.39

Nachos: $6.24

The sum is about:

$10.60.

400

Add the decimals: 6 + 0.402

6.402

400

Order each set of decimals from greatest to least. 5.222, 5.202, 5.022, 5.2222

5.2222, 5.222, 5.202, 5.022

400

Round the decimal to the given place-value. 3.4553; thousandths

3.455

400

Subtract the decimals 148.3 - 121.36

26.94

400

Lizzy’s mom will only let her choose one item at the store.  What is the difference in prices between the sweater and the wig if you round to the nearest TENS?

Sweater: $24.93

Wig: $47.24

The difference is about:

$30.00.

500

Add the Decimals: 19.8+.231

20.031

500

Order each set of decimals from greatest to least. 0.04, 0.0404, 0.404, 0.0444

0.404, 0.0444, 0.0404, 0.04

500

Round the decimal to the given place-value. 2.059; hundredths

2.06

500

Subtract the decimals 248 - 31.48

216.52

500

Liam has $10.00 to buy a snack and a drink at the ball game.  Nachos cost $4.78 and a pop costs $3.23. Liam says he has enough money. Does he?

Yes.