Addition Worksheet 1

1 a.   

_________ + 300 = 900

1 b.   

_________ + 300 = 400

2 a.   

_________ + 900 = 900

2 b.   

_________ + 700 = 1300

3 a.   

_________ + 400 = 800

3 b.   

400 + _________ = 1000

4 a.   

_________ + 900 = 1900

4 b.   

800 + _________ = 1700

5 a.   

300 + _________ = 1300

5 b.   

100 + _________ = 800

6 a.   

1000 + _________ = 1000

6 b.   

300 + _________ = 300

7 a.   

0 + _________ = 900

7 b.   

_________ + 500 = 700

8 a.   

_________ + 100 = 200

8 b.   

600 + _________ = 1400

9 a.   

900 + _________ = 1400

9 b.   

_________ + 300 = 1300

10 a.   

200 + _________ = 200

10 b.   

800 + _________ = 900

 

Answer Key

 

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