Worksheet on Adding Three Digit
Practice the questions given in the worksheet on adding three digit. The questions are based on adding 3-digit problems that do not require regrouping (no regrouping) where 3 addends are needed to arrange in a vertical order to add easily.
We first arrange them one below the other in place value columns and then regroup 10 ones to one ten, 10 tens to 1 hundred, if required.
Now, answer the following questions to quickly recap what you have learnt about addition.
I. Add the following:
(i) 320 + 200
(ii) 515 + 230
(iii) 700 + 150
(iv) 180 + 20
(v) 260 + 40
(vi) 650 + 250
(vii) 789 + 11
(viii) 231 + 119
II. Add the following numbers (three-digit numbers):
(i) 485 + 513 =
(ii) 586 + 301 =
(iii) 845 + 132 =
(iv) 452 + 523 =
(v) 356 + 621 =
(vi) 735 + 213 =
(vii) 642 + 254 =
(viii) 316 + 462 =
(ix) 560 + 316 =
(x) 361 + 417 =
(xi) 654 + 211 =
(xii) 506 + 273 =
(xii) 361 + 628 =
(xiv) 253 + 422 =
(xv) 523 + 363 =
(xvi) 717 + 252 =
(xvii) 512 + 234 =
(xix) 294 + 504 =
(xx) 284 + 305 =
(xxi) 745 +232 =
(xxii) 281 + 716 =
(xxiii) 812 + 103 =
(xxiv) 815 + 082 =
(xxv) 472 + 316 =
(xxvi) 524 + 352 =
(xxvii) 218 + 700 =
(xxviii) 531 + 444 =
(xxix) 145 + 834 =
(xxx) 100 + 304 =
(xxxi) 781 + 114 =
(xxxii) 623 + 313 =
(xxxiii) 300 + 300 =
(xxxiv) 513 + 324 =
III. Arrange in columns and add:
(i) 302; 315; 50
(ii) 612; 201; 122
(iii) 451; 222; 310
(iv) 302; 120; 400
IV. Fill in the blanks, using properties of addition:
(i) 528 + 600 + 318 = ……….. + 600 + 528
(ii) 429 + ……….. = 429
(iii) 199 + ……….. = 162 + 199
V. Estimate the sum to the nearest ten:
(i) 455 + 312 =
(ii) 218 + 607 =
(iii) 506 + 189 =
(iv) 781 + 21 =
Answers for the worksheet on adding three digit numbers are given below to check the exact answers of the above questions to add the 3-digit numbers that do not require regrouping.
Answers:
I. (i) 520
(ii) 745
(iii) 7850
(iv) 200
(v) 300
(vi) 900
(vii) 800
(viii) 350
II. (i) 998
(ii) 887
(iii) 977
(iv) 975
(v) 977
(vi) 948
(vii) 896
(viii) 778
(ix) 876
(x) 778
(xi) 865
(xii) 779
(xii) 989
(xiv) 675
(xv) 886
(xvi) 969
(xvii) 746
(xix) 798
(xx) 589
(xxi) 977
(xxii) 997
(xxiii) 915
(xxiv) 897
(xxv) 788
(xxvi) 876
(xxvii) 918
(xxviii) 975
(xxix) 979
(xxx) 404
(xxxi) 895
(xxxii) 936
(xxxiii) 600
(xxxiv) 837
III. (i) 667
(ii) 935
(iii) 983
(iv) 822
IV. (i) 318
(ii) 0
(iii) 162
V. (i) 770
(ii) 830
(iii) 700
(iv) 800
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