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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

MEAP Preparation - Grade 7 Mathematics
2.56 Addition of Binomials - I

Horizontal Method

In this method, the expressions to be added are summed first. Then like terms in the expressions are written together using Associative Law for addition.

Example: Add the expressions (3a2+2b), (7a-4b) and (a2-6a).
Solution:
Summing the expressions, we have,
(3a2+2b)+(7a-4b)+(a2-6a)

Writing the like-terms together using Associative Law,
(3a2+a2)+(2b-4b)+(7a-6a)
=(3a2+a2)+[2b+(-4)b]+[7a+(-6)a]
=(3+1)a2+[2+(-4)]b+[7+(-6)]a
=4a2+(-2)b+a .......(Adding like terms)
=4a2-2b+a.


Directions: Add the binomials given below. Also write at least 10 examples of your own.
Q 1: Add (5a+4b) and (-3a+2b).
8a+6b
14ab
2a+6b
4x+2y

Q 2: Add (a2+b2) and (a2-b2).
3a2
5a
2a2
6a

Q 3: Add (-3c-4d) and (8c-6d).
11c-10d
5c-10d
11c+2d
-9c+4d

Q 4: Add (k+l) and (k-l).
1
0
2k
2k+2l

Q 5: Add (a2+b2) and (2a2-b2).
6a
4a2
2a2
3a2

Q 6: Add (3x+4y) and (x-2y).
3x2+2y2
4x+2y
2a+6b

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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