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### Grade 8 - Mathematics7.48 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.
 Q 1: Using appropriate formula and find the value of (103)3.1,082,7271,072,7271,062,7271,092,727 Q 2: Using appropriate formula and find the value of (105)3.1,357,6251,457,6251,157,6251,257,625 Q 3: Using appropriate formula and find the value of (203)3.8,364,4278,365,4278,355,4278,265,427 Q 4: Using appropriate formula and find the value of (1002)3.1,006,232,0081,008,012,0081,006,112,0081,006,012,008 Q 5: Using appropriate formula and find the value of (208)3.8,998,9128,978,9128,998,9228,998,612 Q 6: Using appropriate formula and find the value of (1008)3.1,024,292,5121,026,192,5121,028,192,5121,024,192,512 Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!