Addition Worksheet 1

1 a.   

630 + _________ = 660

1 b.   

_________ + 30 = 850

2 a.   

_________ + 50 = 690

2 b.   

650 + _________ = 670

3 a.   

150 + ______ = 170

3 b.   

220 + _________ = 260

4 a.   

_________ + 20 = 970

4 b.   

540 + _________ = 550

5 a.   

600 + _________ = 620

5 b.   

_________ + 20 = 870

6 a.   

_________ + 10 = 350

6 b.   

_________ + 0 = 720

7 a.   

_________ + 10 = 460

7 b.   

830 + _________ = 890

8 a.   

_________ + 60 = 870

8 b.   

______ + 40 = 160

9 a.   

_________ + 50 = 470

9 b.   

340 + _________ = 370

10 a.   

410 + _________ = 430

10 b.   

800 + _________ = 870

 

Answer Key

 

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