Addition Worksheet 1

1 a.   

_________ + 300 = 800

1 b.   

200 + _________ = 700

2 a.   

400 + _________ = 600

2 b.   

900 + _________ = 1500

3 a.   

_________ + 300 = 300

3 b.   

_________ + 200 = 500

4 a.   

_________ + 800 = 1000

4 b.   

300 + _________ = 1300

5 a.   

_________ + 900 = 1600

5 b.   

1000 + _________ = 1700

6 a.   

200 + _________ = 400

6 b.   

100 + _________ = 600

7 a.   

900 + _________ = 1800

7 b.   

_________ + 0 = 200

8 a.   

800 + _________ = 1800

8 b.   

_________ + 600 = 1600

9 a.   

_________ + 500 = 1500

9 b.   

_________ + 1000 = 1500

10 a.   

_________ + 900 = 1000

10 b.   

600 + _________ = 1100

 

Answer Key

 

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