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31 37 39 49 51 53 77 87
From this list write down all the prime numbers.
590
548
526
Work out.
(a) \( 0.06 \times 0.12 \) .................................................. [1]
(b) \( 0.2^3 \) .............................................. [1]
(c) \( \frac{0.4}{0.08} \) .............................................. [1]
568
588
522
A bag contains red balls, blue balls and green balls only. There are twice as many blue balls as green balls. There are twice as many red balls as blue balls. There are 16 blue balls in the bag.
Find the total number of balls in the bag.
570
538
595
Dippi buys 5 burgers and 4 bags of chips for a total cost of $8.10. Burgers cost $1.10 each.
Find the cost of one bag of chips.
$\text{...............................}$
549
600
587
AB is a straight line.
Find the value of $x$.
[Image_1: Diagram with angles 2x^\circ, 3x^\circ, 4x^\circ]
x = \text{.....................}
531
594
569
Work out the following, giving each answer in standard form.
(a) \((4.3 \times 10^4) \times (3 \times 10^{-4})\) .................................................. [2]
(b) \((6 \times 10^{-2}) + (3 \times 10^{-3})\) .................................................. [2]
554
549
543
Solve the simultaneous equations.
$$\begin{align*} 3x + 2y &= -1 \\ 7x - y &= 26 \end{align*}$$
\(x = \text{...........................................}\)
\(y = \text{.....................................................}\)
511
509
500
The interior angle of a regular polygon is 150°. Find the number of sides of this polygon.
528
506
558
Rearrange the formula to make $x$ the subject.
$$ y(x+4) = 2 $$
$$ x = ext{........................................} $$
573
518
504
The pie chart shows the favourite sports of all the students at a school. 180 students chose running as their favourite sport.
Work out
(a) the total number of students at the school,
.................................................. [1]
(b) the number of students that chose football as their favourite sport.
.................................................. [2]
587
526
592
A is the point (1, 7) and B is the point (4, 13).
Find the equation of the perpendicular bisector of AB in the form $y = mx + c$.
$y =$ ext{.............................................} [5]
500
503
508
Find the value of $x$.
$x = \text{......................}$
556
510
547
