Column Addition
Adding Larger Numbers
Adding with Regrouping
Adding with More than 1 Regrouping
Estimating Sums
100

     5

     3

 + 4

12

100

37+41

78

100

    67

+  23

90

100

    347

+  173

520

100

Round to the nearest 10 then add


47+12

60

200

     7

     8

+   9

24

200

83+12

95

200

48+23

71

200

     618

+   798

1,416

200

Round to the nearest 10 then add

67+59

130

300

     4

     3

     5

+   2  

14

300

200 + 705

905

300
     101

+   359

460

300

     389

+ 3,452

3,841

300

Round to the nearest 10 then add


342+28

370

400

     6

     7

     5

+   7 

25

400

4,275 + 1,022

5,297

400

   7,902

+   505

8,407

400

       5,744

+     2,856

8,600

400

Round to the nearest 100 then add


56+521

600

500

      9

      8

      8

+    6    

31

500

26+102+51

179

500

    6,331

+  2,559

8,890

500

      290

    2,271

+  1,846

4,407

500

Round to the nearest 100 then add

521+378+47

900

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