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Date:___________________

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Grade 8 - Mathematics
7.48 Solving using Formula - II

Example:
Using appropriate formula and find the value of (1003)3.
Solution:
We can change the given problem like (1000+3)3,
This is in the form of (a+b)3, so we can use this formula,
(1000+3)3 = (1000)3 + 3.(1000)2.3 + 3.1000.(3)2 + (3)3
= 1,000,000,000 + 3.1,000,000.3 + 3.1000.9 + 27
= 1,000,000,000 + 9,000,000 + 27,000 + 27
= 1,009,027,027


Directions: Solve the following problems using appropriate formula. Also write at least ten examples of your own.

Name: ___________________

Date:___________________

Grade 8 - Mathematics
7.48 Solving using Formula - II

Q 1: Using appropriate formula and find the value of (502)3.
126,526,008
124,506,008
126,508,008
126,506,008

Q 2: Using appropriate formula and find the value of (208)3.
8,998,912
8,998,612
8,998,922
8,978,912

Q 3: Using appropriate formula and find the value of (203)3.
8,265,427
8,365,427
8,355,427
8,364,427

Q 4: Using appropriate formula and find the value of (603)3.
219,256,227
219,246,227
239,256,227
219,276,227

Q 5: Using appropriate formula and find the value of (105)3.
1,457,625
1,157,625
1,357,625
1,257,625

Q 6: Using appropriate formula and find the value of (1008)3.
1,024,292,512
1,026,192,512
1,028,192,512
1,024,192,512

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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