iGCSE Revision Grade 6 | Baamboozle - Baamboozle

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Christmas revision Grade 6 of iGCSE Math

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#iGCSE math

Find 8 in a power of 1/3

Find the value of (4/5) in a power of -2

25/16 or 1.5625

Find the value of 100 in a power of 1/2

What is -125 in a power of 1/3 ?

-5

Work out 64 in a power of -1/3

1/4

What is 8 in a power of -2/3 ?

1/2^2 = 1/4

A shop decreases prices by 10% and then by a further 20%. Rachel says: “Prices have now decreased by 30%”. Is Rachel correct? Why?

Price have decreased by 28% (1 - 0.9*0.8)

Alex invests some money for 3 years in a savings account. She gets 4% per annum compound interest. Alex has £5680.56 at the end of 3 years, work how much she invested.

£5050

Charlie invests £2500 for 3 years in a savings account. She gets 3% per annum compound interest in the first year, then x% for 2 years. Charlie has £2705.36 at the end of 3 years, work out the value of x .

2.5% ( sqr [2705.36/(2500*1.03)] -1 )

Find the equation of the line perpendicular to 5y=2x-4 which passes through (0,7)

y=-5/2 x +7

Line A passes through the points (2, 1) and (5, 10) Find the equation of the line parallel to A that passes through (0,-5)

y = 3x - 5

Write 5√27 in the form k√3 , where k is an integer.

15√3

Write 7√20 in the form k√5 , where k is an integer

14√5

Expand and Simplify (2 + √3)(2 – √3)

4 - 3 = 1

Rationalise the denominator 6/√3

6√3/3 = 2√3

Rationalise the denominator (1+√5)/√2

(√2+√10)/2