Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

14th October 2015

5 questions · 12 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
4 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
Four classes in order have frequencies 11, 10, 9, 10. Write down the cumulative frequency at the end of the third class.
3
Reverse Percentages3 marks
A bill is £48 including VAT at 20%. Work out the amount before VAT.
4
Trigonometric and Exponential Graphs2 marks
The curve y = 3^x is drawn. Work out y when x = 1, and write down where the curve crosses the y-axis.
5
Speed and Density2 marks
A block has volume 170 cm^3 and density 11 g/cm^3. Work out its mass.

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