Addition Worksheet 1

1 a.   

550 + _________ = 580

1 b.   

250 + _________ = 290

2 a.   

_________ + 20 = 630

2 b.   

540 + _________ = 590

3 a.   

740 + _________ = 780

3 b.   

_________ + 70 = 890

4 a.   

_________ + 50 = 370

4 b.   

180 + ______ = 190

5 a.   

150 + ______ = 190

5 b.   

_________ + 20 = 550

6 a.   

870 + _________ = 890

6 b.   

730 + _________ = 740

7 a.   

_________ + 40 = 490

7 b.   

_________ + 50 = 670

8 a.   

_________ + 80 = 490

8 b.   

_________ + 60 = 790

9 a.   

720 + _________ = 760

9 b.   

_________ + 40 = 290

10 a.   

850 + _________ = 890

10 b.   

_________ + 40 = 390

 

Answer Key

 

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