Practice the questions given in the worksheet on addition of like terms. The questions are based on arranging all the groups of like terms and then they are added.
1. Fill in the blanks:
(i) 7 + 3 = ____ and 7x + 4x = ____
(ii) 9 + 13 = ____ and 9a + 13a = ____
(iii) 6 + 8 = ____ and 6mn + 8mn = ____
(iv) 14 + 16 = ____ and 14abc + 16abc = ____
(v) 7 + 19 = ____ and 7a + 19b = ____
(vi) 2 + 8 = ____ and 2abmn + 8abmn = ____
2. Add arranging the
like terms:
(i) 8ab and 3ab
(ii) 2abc, abc and 6abc
(iii) 2x, 3x and 4y
(iv) 3x and 2y
(v) 5ab, 3ba and 7bc
(vi) 5a, 9a and 3ab
3. Fill in the blanks:
(i) The sum of -2 and – 5 = ____ and the sum of -2a and - 5a = ____
(ii) The sum of 10 and – 9 = ____ and the sum of 10x and – 9x = ____
(iii) The sum of -7 and – 13 = ____ and the sum of -7abc and – 13abc = ____
(iv) The sum of 12 and 8 = ____ and the sum of 12xyz and 8xyz = ____
(v) 18 + 9 + 4 = ____ and 18m + 9 + 4m = ____
(vi) 14 – 15 + 9 = ____ and 14mn – 15mn + 9mn = ____
4. Evaluate:
(i) 6x + 4x + 3x + 5x
(ii) x + y + z + x + y + z
(iii) 5mn + 4m^{2}n + 3n + 7n(vi) 2xyz + 12yxz + 13zxy + 4zyx
Answers for the worksheet on addition of like terms are given below to check the exact answers of the above questions.
Answers:
1. (i) 11, 11x
(ii) 22, 22x
(iii) 14, 14mn
(iv) 30, 30abc
(v) 26, 7a + 19b
(vi) 10, 10abmn
2. (i) 11ab
(ii) 9abc
(iii) 5x + 4y
(iv) 3x + 2y
(v) 9abc
(vi) 14a + 3ab
3. (i) -7, -7a
(ii) 1, x
(iii) -20, -20abc
(iv) 20, 20xyz
(v) 31, 31m
(vi) 8, 8mn
4. (i) 18x
(ii) 2x + 2y + 2z
(iii) 5mn + 4m^{2}n + 10n(vi) 31xyz
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