Addition Worksheet 1

1 a.   

_________ + 20 = 240

1 b.   

_________ + 70 = 670

2 a.   

710 + _________ = 720

2 b.   

660 + _________ = 680

3 a.   

_________ + 30 = 890

3 b.   

_________ + 60 = 780

4 a.   

600 + _________ = 690

4 b.   

700 + _________ = 750

5 a.   

300 + _________ = 360

5 b.   

250 + _________ = 260

6 a.   

_________ + 90 = 590

6 b.   

_________ + 20 = 780

7 a.   

600 + _________ = 630

7 b.   

_________ + 20 = 690

8 a.   

320 + _________ = 360

8 b.   

______ + 40 = 170

9 a.   

430 + _________ = 470

9 b.   

______ + 40 = 190

10 a.   

430 + _________ = 460

10 b.   

400 + _________ = 450

 

Answer Key

 

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