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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

MEAP Preparation - Grade 7 Mathematics
2.81 Multiplication of a Monomial and a Trinomial - I

Example: 5x(3x+7y+9z) = _____ ?
Solution:
5x.3x + 5x.7y + 5x.9z
= (5.3).(x.x) + (5.7).(x.y) + (5.9).(x.z)
=15x1+1+35xy +45xz
=15x2+35xy+45xz
Directions: Solve the following multiplication problems. Also write at least 10 examples of your own.
Q 1: 10x(9x+7xy+9z) = _____ ?
48x2+56xy+72x2yz
63x2y+49x2y+63x
90x2+70x2y+90xz
90x2+70xy+90x2z

Q 2: 5x(9x+7y+7z) = _____ ?
45x2+35xy+35xz
45x3+35xy+35xz
45x2+35xy+57xz
63x2y+49x2y+63x

Q 3: 8x(6x+7y+9xyz) = _____ ?
48x2+56xy+72x2yz
63x2y+49x2y+63x
48x2+56xy+72xy2z
48x2+56x2y+72xyz

Q 4: 7x(9xy+7xz+9x) = _____ ?
48x2+56xy+72x2yz
63x2y+49x2z+63x2
63x2y+49x3z+63x2
63x3y+49x2z+63x

Q 5: 9x(7xy+10y+9xz) = _____ ?
63x2y+90xy+81x2z
63x2y+49x2y+63x
48x2+56xy+72x2yz
63x3y+90xy+81x2z

Q 6: 7x(9xy+7yz+7xz) = _____ ?
63x2y+49x2y+63x
63x2y+77xyz+49x2
63x2y+49xyz+49x2z
63x2y+49xyz+49x4z

Q 7: 6x(7x+9xy+7yz) = _____ ?
42x2+54x2y+42xyz
48x2+56xy+72x2yz
63x2y+49x2y+63x
42x2+54xy+42x2yz

Q 8: 7x(9x2y+7xy+7xyz) = _____ ?
48x2+56xy+72x2yz
63x3y+49x2y+49x2yz
63x3y+49xy+49x2yz
63x2y+49x2y+63x

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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