Addition Worksheet 1

1 a.   

 _________ + 60 = 790

1 b.   

 510 + _________ = 560

2 a.   

 150 + ______ = 190

2 b.   

 430 + _________ = 490

3 a.   

 440 + _________ = 490

3 b.   

 _________ + 20 = 890

4 a.   

 500 + _________ = 520

4 b.   

 150 + ______ = 170

5 a.   

 650 + _________ = 690

5 b.   

 730 + _________ = 750

6 a.   

 _________ + 10 = 390

6 b.   

 520 + _________ = 580

7 a.   

 680 + _________ = 690

7 b.   

 _________ + 40 = 850

8 a.   

 _________ + 40 = 890

8 b.   

 _________ + 40 = 590

9 a.   

 _________ + 40 = 690

9 b.   

 860 + _________ = 880

10 a.   

 450 + _________ = 490

10 b.   

 210 + _________ = 280

 

Answer Key

 

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