9MAT recall practice

Question 1

Calculate 2 + 3 x 4

Answer 1

14

Question 2

Calculate 12 - (5+1) x 2

Answer 2

0

Question 3

What is the definition of an improper fraction?

Answer 3

Improper fractions are fractions where the numerator is greater than the denominator

Question 4

Convert 4 and 3/7 to an improper fraction

Answer 4

31/7

Question 5

What is 3/8 of 16?

Answer 5

6

Question 6

5/11 of ? is 30

Answer 6

? is 66

Question 7

Give the first 4 multiples of 6.

Answer 7

6, 12, 18, 24

Question 8

What is the lowest common multiple (LCM) of 3 and 5?

Answer 8

15

Question 9

What are the factors of 24?

Answer 9

1, 24 2, 12 3, 8 4, 6

Question 10

What is the highest common factor (HCF) of 24 and 40?

Answer 10

8

Question 11

What is the definition of prime numbers?

Answer 11

A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers.

Question 12

Is 1 a prime number?

Answer 12

No

Question 13

What are the Prime Factors of 50?

Answer 13

2 x 5 x 5

Question 14

What is the Cube Root of 64?

Answer 14

4

Question 15

What does BEDMAS stand for?

Answer 15

Order of operations. Brackets, Exponential, Division, Multiplication, Addition, and Subtraction. We always solve the equation from left to right if order of operation is the same.

Question 16

Round 3065.192 to 1 dp.

Answer 16

3065.2

Question 17

Round 3065.192 to 2 dp.

Answer 17

3065.19

Question 18

Which is larger 1/3 or 2/5?

Answer 18

2/5

Question 19

Amy put 2 kg of sweets in 12 bags. What is the weight of sweets in each bag?

Answer 19

1/6 kg

Question 20

What is 1/3 + 2/5?

Answer 20

11/15

Question 21

What is 1/3 x 2/5?

Answer 21

2/15

Question 22

What is 3/4 divided by 3/2?

Answer 22

1/2

Question 23

Write down the expanded form of 4!

Answer 23

4x3x2x1

Question 24

Calculate 6!

Answer 24

720

Question 25

Calculate sqrt(400) / sqrt(25)

Answer 25

4

Question 26

Find the general formula of the sequence: 3, 8, 13, 18, 23 ......

Answer 26

5n-2

Question 27

Find the general formula of the sequence: 10, 7, 4, 1, -2 ......

Answer 27

-3n+13

Question 28

Solve x + 6 = 15

Answer 28

x = 11

Question 29

Solve x - 19 = -43

Answer 29

x = -24

Question 30

Solve -4x = 38

Answer 30

x = -19/2

Question 31

Solve x/4 = 15

Answer 31

x = 15*4 = 60

Question 32

Solve 32/x = 10

Answer 32

Step 1: 10x = 32 Step2: x = 32/10 = 3.2

Question 33

Solve 2x+7=29

Answer 33

Step 1: 2x = 22 Step 2: x = 11

Question 34

Solve 15 - 8x = 135

Answer 34

Step 1: -8x = 120 Step 2: x = 120/-8 = -15

Question 35

Express the sum of x and 4

Answer 35

x + 4

Question 36

Express the difference between a number and 3

Answer 36

3 - n

Question 37

Express four times a number plus 2

Answer 37

4n + 2

Question 38

Express: add three to a number and then multiply it by four

Answer 38

4(n+3) You must include the bracket!!!

Question 39

Express: Triple a number then half your result

Answer 39

(3n) / 2

Question 40

Evaluate (a-2)^2 when a = -6

Answer 40

64

Question 41

Evaluate a - 5b when a = 7 and b = -3

Answer 41

22

Question 42

Simplify 8x + 12x - 3

Answer 42

20x - 3

Question 43

Simplify 3x - 6y + 4x + 2y

Answer 43

7x -4y

Question 44

Simplify a * a * b * b * b

Answer 44

a^2 * b^3

Question 45

Simplify (5xy)/(10y)

Answer 45

x/2

Question 46

Simplify 24g^2 / 3g^4

Answer 46

8/g^2

Question 47

Simplify 2ab * 4a^2b

Answer 47

8(a^3)(b^2)

Question 48

Convert 1.45m to cm

Answer 48

145cm

Question 49

Convert 25 cm^2 to mm^2

Answer 49

2500mm^2

Question 50

Convert 5.4m^3 to L

Answer 50

5400L

Question 51

A workbook weighs 1.8kg. How much would a pallet of 1200 books weigh in tonnes?

Answer 51

2.16T

Question 52

A room has dimension 450cm by 320cm. What is its area in m^2?

Answer 52

14.4m^2

Question 53

A swimming pool is twice as long as its wide. If its length is 50m, what is its perimeter?

Answer 53

150m

Question 54

What is the formula of the perimeter of a circle?

Answer 54

C = 2 * pi * r or pi * d

Question 55

What is the formula of the area of a circle?

Answer 55

A = pi * r^2

Question 56

A circular pool has a radius of 3.4m. What is the circumference of the pool? (1dp)

Answer 56

21.4 m

Question 57

A circular garden has diameter of 8.5m. What is the area of the garden? (whole number)

Answer 57

57m^2

Question 58

A semi-circle has radius 1.6cm. What is the perimeter of the semi-circle? (2dp)

Answer 58

13.25cm

Question 59

How to calculate the area of a triangle?

Answer 59

A = 1/2 * base * height

Question 60

How to calculate the area of a trapezium?

Answer 60

A = 1/2 * (a+b) * h

Question 61

What is the sum of the exterior angles of a polygon?

Answer 61

360

Question 62

What is the formula for the sum of the interior angles of a polygon?

Answer 62

(n-2)*180

Question 63

Angles on a straight line sum to ?

Answer 63

180

Question 64

Angles around a point sum to ?

Answer 64

360

Question 65

What is the equation of a straight line in general?

Answer 65

y = mx + c

Question 66

For the straight line equation y = mx + c, what is m and what is c ?

Answer 66

m : gradient c: y-intercept

Question 67

How to calculate the gradient of a line?

Answer 67

m = (y2-y1)/(x2-x1)

Question 68

A straight line passes through (0,3) and (-2, 9). What is the gradient of the line?

Question 69

A straight line passes through (0,3) and (-2, 9). What is the equation of the line?

Answer 69

y = -3x - 3

Question 70

At the beginning of the season an athlete's best time for 400m is 65 sec. Over the season he improves his time by 4%. By how much has he improved his time? And what is his time for 400m at the end of the season?

Answer 70

Increased by: 65 * 4% = 2.6 secs Total time is 65 - 2.6 = 62.4 secs