Practice the questions provided in the worksheet to find the sum using addition property. Using the mathematical property involving addition to rewrite the statement and find the sum.
1. Fill in the blanks:
(i) 11 + 9 = 9 + ………..
(ii) 63 + 27 = 27 + ………..
(iii) ……….. + 37 = 37 + 41
(iv) 125 + ……….. = 128 + 125
(v) 48 + 0 = ………..
(vi) 0 + ……….. = 98
2. What is the sum if zero is added to 101?
3. Find the sum of 53 + 47 and 47 + 53. On this basis give
the property of addition.
4. Fill up the gaps with the proper numbers:
(i) (101 + 99) + 200 = (99 + 200) + ……….. = (101 + 200) + ………..
(ii) 103 + (224 + 155) = (103 + 224) + ……….. = (155 + 224) + ………..
5. Give three examples for the property of addition which states that the grouping does not change the sum of three numbers.
6. Add the following:
(i) 48 + 31 =
(ii) 9 + 11 =
(iii) 127 + 251 =
7. Find the sum of:
(i) 9 + 5 + 6 =
(ii) 25 + 15 + 20 =
(iii) 111 + 222 + 333 =
8. Add together:
(i) 76 + 67 =
(ii) 9 + 99 =
(iii) 318 + 426 =
(iv) 98 + 73 =
(v) 73 + 89 =
(vi) 239 + 328 =
(vii) 28 + 34 + 56 =
(viii) 39 + 49 + 59 =
(ix) 180 + 810 + 0 =
(x) 10 + 50 + 70 =
(xi) 93 + 94 + 95 =
(xii) 247 + 275 + 308 =
9. Find the sum of 372, 162 and 378.
Answers for the worksheet to find the sum using addition property are given below to check the exact answers of the above questions when two or more numbers are added.
Answers:
1. (i) 11
(ii) 63
(iii) 41
(iv) 128
(v) 48
(vi) 98
2. 101
3. 100 and 100
4. (i) 101, 99
(ii) 155, 103
5. (i) (105 + 225) + 110 = (225 + 110) + 105 = (105 + 110) + 225 = 440
(ii) (105 + 225) + 110 = (225 + 110) + 105 = (105 + 110) + 225 = 440
(iii) (105 + 225) + 110 = (225 + 110) + 105 = (105 + 110) + 225 = 440
6. (i) 79
(ii) 20
(iii) 378
7. (i) 20
(ii) 60
(iii) 666
8. (i) 143
(ii) 108
(iii) 744
(iv) 171
(v) 162
(vi) 567
(vii) 118
(viii) 147
(ix) 990
(x) 130
(xi) 282
(xii) 830
9. 912
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