Addition Worksheet 1

1 a.   

_________ + 400 = 800

1 b.   

100 + _________ = 600

2 a.   

_________ + 1000 = 1900

2 b.   

_________ + 500 = 1300

3 a.   

_________ + 900 = 1000

3 b.   

1000 + _________ = 1200

4 a.   

_________ + 800 = 1100

4 b.   

300 + _________ = 800

5 a.   

900 + _________ = 1000

5 b.   

300 + _________ = 700

6 a.   

800 + _________ = 1100

6 b.   

500 + _________ = 700

7 a.   

900 + _________ = 1300

7 b.   

1000 + _________ = 1700

8 a.   

_________ + 500 = 1400

8 b.   

_________ + 400 = 1200

9 a.   

800 + _________ = 1300

9 b.   

1000 + ____________ = 2000

10 a.   

900 + _________ = 1600

10 b.   

_________ + 700 = 1100

 

Answer Key

 

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