MATH WEEK COMPETITION

Number& Place value

100

Round 684 739 to the nearest 1000. 

685 000.

200

Round 3 496 518 to the nearest 10 000. 

3 500 000 

300

Round 14.715 to 

A) nearest 10 

B) whole number

C) 1 d.p

A) 10

B) 15

C) 14.7 

Four Operations

100

Calculate :  

- 18 : 3 + 7 

Answer: 1 

200

Evaluate: 

4x (-6+9) - 14 

-2 

300

A number is divided by -4 , then 6 is added. 

The final result is -1 .

Find the number . 

Number is 28. 

Fractions& Decimals

100

Write 0.6 as a fraction. 

6/10 or 3/5 .

200

 Calculate : 2 ¼ + 1 ⅔

3 11/12

300

Which is larger : 

5/6 or 0.82  ? 

5/6 

5/6~ 0.8333…. So 5/6 is larger

Algebra basics

100

 Simplify : 5a -6 - a = 

 answer : 4a -6 

200

solve :

2x-5=13 

X=?

 X = 9

300

Solve :

5+ 3( x-2) = 14 

X =? 

X= 5 

Geometry

100

Find the perimeter of a rectangle with length 12 cm and width 7.5 cm . 

P = 2( 12+7.5) =39 

200

A rectangle has a perimeter of 40 cm. 

Its length is 12 cm. 

Find the width. 

W = 8 cm 

300

A square and a rectangle have the same perimeter. 

The square has side 6 cm. 

The rectangle has length 8 cm. 

Find the width of the rectangle. 

P (square ) = 4x 6= 24

P rectangle is also 24 

24= 2 x ( 8+ w) 

W = 24/2-8=4