Adding and Subtracting with Decimals

Adding

100

.05 + .02

.07

200

.021 + .138

.159

300

.6 + .5

1.1

400

1.52 + 3.4

4.92

500

.804 + 2.16

2.964

Subtracting

100

1.4 - .2

1.2

200

15.6 - 14

1.6

300

1.2 - .70

.5

400

2 - .77

1.23

500

3.004 - 0.9

2.104

Mix It Up

100

0.5 - 0.40

0.1

200

72 + 0.3

72.3

300

12 - 0.5

11.5

400

.26 - .259

.001

500

9.999 + 1.88

11.879

Word Problems

100

Jax is .5 in taller than Mo.  Mo is 46 inches tall.  How tall is Jax?

Jax is 46.5 inches tall.

200

Stella bought 3.4 lbs of chicken.  Maris bought 5.03 lbs of chicken.  How much chicken did they buy together?

They bought 8.43 lbs together.

300

Toby saved $5.87.  Joaquin saved $1.25 more than Toby.  How much money did they save in total?

Together they saved $12.99.

400

Janie weighs 139.25 lbs.  Carolina weighs the same as Janie.  Kioto weighs .77 less than Carolina.  How much do the three women weigh altogether?

They weigh 416.98 lbs altogether.

500

Suheil raised $420.65 for charity.  Bobbi raised $16.88 more than Suheil.  Joanina raised $5.25 less than Suheil.  How much money was raised for charity?

Altogether they raised $1273.58.

Miscellaneous

100

True or False: When subtracting numbers with decimals, you need to line up the decimals, but when you are adding, you don't.

FALSE

200

When adding or subtracting decimals with different numbers of places, it is ok to put zeroes on the end to make the places the same.

TRUE

300

Is water from a faucet freshwater or salt water?

freshwater

400

True or False:  This is solvable:  2.095 - 5

FALSE

500

What is one thing that helps determine one biome from the other?

rainfall, temperature, weather, plant life, & animal life.