Worksheet on Addition Properties
Third grade math worksheet on addition properties is great for practicing and testing the knowledge of the students on identifying the different properties.
Property I: When we change the order of numbers while adding, the sum does not change.
17 + 18 = 35
18 + 17 = 35
Property II: When we add 0 to a number or a number to 0, the sum is the number itself.
15 + 0 = 15
0 + 18 = 18
Property III: When we add 1 to a number, the sum is the successor of that number.
24 + 1= 25
75 + 1 = 76
1. Fill in the blanks:
(i) 64 + 53 = ? + 64
(ii) 365 + 427 = ? + 365
(iii) ? + 261 = 261 + 170
(iv) 765 + ? = 188 + 765
(v) 198 + 318 = ? + 198
(vi) ? + 421 = ? + 583
(vii) 2149 + ? = 3254 + 2149
(viii) ? + 6253 = ? + 1247
(ix) 367 + 1427 + 278 = ? + 278 + 367
(x) 3725 + 2508 + ? = 2982 + 2508 + 3725
(xi) (4014 + 1572) + 1914 = 4014 + (? + 1914)
(xii) (7528 + ?) + 1575 = 7528 + (2524 + 1575)
(xiii) 33 + (39 + 45) = (? + 39) + 45 = (33 + 45) + ?
(xiv) 15 + 16 + 17 = (15 + 16) + ? = (16 + 17) + ? = (17 + 15) + ?
(xv) 135 + 240 + 345 = ? + (240 + 345) = (240 + 135) + ?
2. Complete the addition:
(i) 365 + 0 = ?
(ii) 0 + 1350 = ?
(iii) 1578 + ? = 1578
(iv) ? + 1478 = 1478
(v) 79 + 1 = ?
(vi) 173 + ? = 174
(vii) ? + 1 = 1460
(viii) 1 + 3780 = ?
(ix) 3060 + ? = 3061
(x) ? + 2508 = 2508
3. What is the additive element of a number?
4. Write true or false against the following statements:
(i) When zero is added to any number, the sum is the number.
(ii) When 1 is added to any number, the sum is reduced.
Answers for the worksheet on addition properties are given below to check the exact answers of the above addition questions.
Answers:
1. (i) 53
(ii) 427
(iii) 170
(iv) 188
(v) 318
(vi) 583, 421
(vii) 3254
(viii) 1247, 6253
(ix) 1427
(x) 2982
(xi) 1572
(xii) 2524
(xiii) 33, 39
(xiv) 17, 15, 16
(xv) 135, 345
2. (i) 365
(ii) 1350
(iii) 0
(iv) 0
(v) 80
(vi) 1
(vii) 1461
(viii) 3781
(ix) 1
(x) 0
3. 0
4. (i) True
(ii) False
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