Adding and Subtracting Numbers

Double Digit Addition

100

46 + 25 = 

71

200

67 + 29 =

96

300

52 + 83 = 

135

400

17 + 68 = 

85

500

63 + 84

147

Double Digit Subtraction

100

86 - 45 = 

41

200

94 - 57 = 

37

300

64 - 18 =

46

400

86 - 56 =

30

500

77 - 46 =

31

3-Digit by 3-Digit Addition

100

573 + 321 = 

894

200

125 + 567 = 

692

300

648 + 389 =

1037

400

357 + 280 =

637

500

839 + 267 =

1106

3-Digit by 3-Digit Subtraction

100

753 - 248 = 

505

200

962 - 567 = 

395

300

563 - 231 =

332

400

854 - 732 = 

122

500

746 - 348 = 

398

Estimating Sums

100

364 + 125 = 

360 + 130 = 490

400 + 100 = 500

200

459 + 643 =

460 + 640 = 1100

500 + 600 = 1100

300

325 + 572 =

330 + 570 = 900

300 + 600 = 900

400

896 + 342 =

900 + 340 = 1240 

900 + 300 = 1200

500

569 + 226 = 

570 + 230 = 800

600 + 200 = 800