# Teaching Treasures™ Complete all the maths problems

Year 8-9 Maths

Complete all problems, click "Check Answers" button to show results.

1. Tom invests \$135 at 8% per annum (p.a.), compounded semi-annually for 3 years.
Find the total amount Tom will have after three years. Round to nearest hundredth.

Help 1. Find the surface area and volume of a cube with a side length (L) of 12 cm.

SA= cm2 Formula: SA= L2 × 6

V = cm3 Formula: V = L3

1. Find the next five terms of the sequences below...
 a)   12, 24, 36, ..... , , , , b)   2, 8, 32, ..... , , , , c)   400, 200, 100, ..... , , , , d)   64, 58, 52, 46, ..... , , , , Help

1. Complete the table below. Round to the nearest hundred-thousandth if required.
 Substitute x + 9 3 - x 2x - 3 x3 7 - 3x x = 7     x = -4     x = -13     x = 0.25     Help
 5. An octagon, has a radius of 6 cm. Can you find the area of it?   Formula :   2  x  r 2  x 1.4142135 Round up to the nearest hundredth.

cm  Help 6. Type all prime numbers between 50 and 100. Break each prime number up with a comma.

Help 1. Susan wants to borrow \$25,000 for five years. She visited four banks,  all four charge a different rate per annum.
 a.   How much interest would be paid at Bank 1  at 11% p.a.? b.   How much interest would be paid at Bank 2 at 12.5% p.a.? c.   How much interest would be paid at Bank 3 at 12.75% p.a.? d.   How much interest would be paid at Bank 4 at 13% p.a.? Help

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