Adding and subtracting using models
Addition
Subtraction
Adding and subtracting word problems
100

Use the hundred grid to show 

 0.20 + 0.10

0.30

100

3. 23. + 5.12

8.35

100

5.3- 2.3

3

100

Jacob ran 3.85 miles on Monday and 4.2 miles on Tuesday. How much miles did he run in total?

8.05

200

Use the hundred grid to show 

0.50 - 0.30

0.20

200

23.45 + 72.98

96.43

200

28.56- 12.45

16.11

200

Jayden measured 9.805 grams of a substance in one test and 4.295 grams in another. What is the total mass of the substance used? 

14.1 mass of substance was used

300

Use the hundred grid to show 

1.20 + 0.30

1.50

300

234.56 +  32.45

267.01

300

945.34 - 38.55

906.79

300

A fish tank holds 15.75 liters of water. After evaporation, it has 13.2 liters. How many liters of water evaporated? 

2.55 liters of water evaporated 

400

Use the hundred grid to show 

1.30 - 0.40

0.90

400

335.732 + 45.326

381.058

400

800.00 - 552.87

247.13

400

Ms. Persaud had $200.00. She bought a jacket for $87.65. How much money does she have left? 

She has $112.35 left. 

500

Use the hundred grid to show 

2.10 + 1.20

3.30

500

542.546 + 219.567

762.113

500

900.00- 346.76

553.24

500

The class collected $300.00 for a field trip. They used $174.85 for bus tickets. How much remains in the fund? 

$125.15