Doon Ow!

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Number Sequences 1

What is the 10th:
a) Odd number; 19
b) Square number; 100
c) Prime number. 29

Factors

Find all the factors of:

33

1, 3, 11, 33.

Multiples

Subtract the 5th from the 8th multiples of:

3

9

Polygons

What are the names of regular polygons with:
a) five sides;
b) six sides;
c) seven sides.

Pentagon, Hexagon and Heptagon (all regular)

Rounding (3sf)

Round to three significant figures:
a) 68.46; 68.5
b) 357739; 358000
c) 68; 68.0
d) 0.006895; 0.00690

Area of a Triangle

Find the area of a triangle that has a base of 4cm and a height of 9cm.

18cm2

Area of a Trapezium

Find the area of a trapezium that has a base of 13cm, a height of 8cm and a top (parallel to base) of 7cm. 80cm2

Fractions (Adding)

Evaluate:

\( \frac{4}{6} + \frac{9}{12}\) \(= 1\frac{5}{12}\)

Fractions (Multiplying)

Evaluate:

\( \frac{1}{3} × \frac{5}{6}\) \(= \frac{5}{18}\)

Fractions (Dividing)

Evaluate:

\( \frac{3}{5} ÷ \frac{7}{6}\) \(= \frac{18}{35}\)

Circle (Vocabulary)

Name the red part.

Circle part Circle part

Venn Diagrams

Describe the red region.

Circle part Circle part

Shape Formulas

What is the formula?

Circle part Circle part

Formulas (Advanced)

What is it?

Circle part Circle part

Fraction to Percentage

Convert this fraction to a percentage to 3 significant figures.

\( \frac{2}{6}\) \(= 33.3\)%

Circle Area

Find the area of a circle that has a radius of 5cm. Give your answer to three significant figures.

78.5cm2

Circle Circumference

Find the circumference of a circle that has a radius of 3cm. Give your answer to three significant figures.

18.8cm

Decimals (Adding)

Calculate the value of:

9.6 + 3.5

= 13.1

Decimals (Subtracting)

Calculate the value of:

6.3 − 1.8

= 4.5

Decimals (Multiplying)

Calculate the value of:

3.4 × 6.8

= 23.12

Decimals (Dividing)

Calculate the value of:

139.2 ÷ 16

= 8.7

Indices (Simple)

What is the value of:

22

= 4

Indices (Advanced)

What is the value of:

\(1^{\frac{1}{2}}\)

\(= 1\)

Basic Addition

Calculate the value of:

29 + 97

= 126

Basic Subtraction

Calculate the value of:

92 − 26

= 66

Basic Multiplication

Calculate the value of:

39 × 35

= 1365

Basic Division 2

Calculate the value of:

1118 ÷ 13

= 86

Percentage (Of)

Find the value of:

45% of 160

= 72

Standard Form 1

Find the value of:

5.01 × 105

= 501000

Highest Common Factor

Find the highest common factor of twelve and four.

= 4

Times Tables (2-5)

6 × 3 = 18

3 × 2 = 6

5 × 2 = 10

8 × 2 = 16

9 × 3 = 27

7 × 5 = 35

4 × 3 = 12

2 × 2 = 4

Times Tables (2-12)

8 × 8 = 64

4 × 7 = 28

3 × 2 = 6

9 × 6 = 54

7 × 8 = 56

6 × 9 = 54

5 × 9 = 45

2 × 8 = 16

Times Tables (2)

4 × 2 = 8

9 × 2 = 18

8 × 2 = 16

6 × 2 = 12

7 × 2 = 14

3 × 2 = 6

5 × 2 = 10

2 × 2 = 4

Times Tables (3)

8 × 3 = 24

7 × 3 = 21

6 × 3 = 18

5 × 3 = 15

9 × 3 = 27

4 × 3 = 12

3 × 3 = 9

2 × 3 = 6

Times Tables (4)

7 × 4 = 28

5 × 4 = 20

4 × 4 = 16

6 × 4 = 24

9 × 4 = 36

3 × 4 = 12

8 × 4 = 32

2 × 4 = 8

Times Tables (5)

8 × 5 = 40

6 × 5 = 30

3 × 5 = 15

9 × 5 = 45

7 × 5 = 35

4 × 5 = 20

5 × 5 = 25

2 × 5 = 10

Times Tables (6)

8 × 6 = 48

6 × 6 = 36

7 × 6 = 42

5 × 6 = 30

3 × 6 = 18

9 × 6 = 54

4 × 6 = 24

2 × 6 = 12

Times Tables (7)

6 × 7 = 42

8 × 7 = 56

5 × 7 = 35

9 × 7 = 63

3 × 7 = 21

4 × 7 = 28

7 × 7 = 49

2 × 7 = 14

Times Tables (8)

4 × 8 = 32

8 × 8 = 64

3 × 8 = 24

7 × 8 = 56

6 × 8 = 48

9 × 8 = 72

5 × 8 = 40

2 × 8 = 16

Times Tables (9)

5 × 9 = 45

7 × 9 = 63

8 × 9 = 72

3 × 9 = 27

9 × 9 = 81

4 × 9 = 36

6 × 9 = 54

2 × 9 = 18

Times Tables (12)

8 × 12 = 96

5 × 12 = 60

7 × 12 = 84

9 × 12 = 108

3 × 12 = 36

4 × 12 = 48

6 × 12 = 72

2 × 12 = 24

Fractions (Equivalent)

Write this fraction in its simplest form:

\( \frac{28}{49}\) \(= \frac{4}{7}\)

Fractions (Mixed)

Evaluate:

\( 1\frac{4}{5} − \frac{8}{9}\) \(= \frac{41}{45}\)

Pythagoras

Find AC if AB = 5.2m and BC = 6.9m. 4.54m

Trigonometry (Angle)

Find angle ABC if AC = 3.6m and AB = 5.6m. 32.7o

Trigonometry (Side)

Find AC if angle ABC = 38o and AB = 4.6m. 3.59m

Roman Numerals (1-12)

Give your answer in Roman numerals.

2

Roman Numerals (60-100)

Give your answer in Roman numerals.

2

Roman Numerals (Large)

Give your answer in Roman numerals.

2

Fraction to Decimal

Convert this fraction to a decimal.

\( \frac{2}{5}\) \(= 0.4\)

Decimal to Fraction

Convert this decimal to a fraction.

\(0.64\) = \( \frac{16}{25}\)

Percentage (Increase)


Increase £20 by 25%

£25

Lowest Common Multiple

What is the lowest common multiple of four and ten.

= 20

Sequence (Arithmetic)

6,17,28,39,50...

Find the:
a) next term; 61
b) nth term; 11n - 5
c) term number 34; 369

Sequence (Geometric)

5,15,45,135,405...

Find the:
a) next term; 1215
b) nth term; 5 × 3n-1
c) term number 10; 98415

Interest (Simple)

If £160 is invested for 6 years with a simple interest rate of 3%, find the amount of interest earned. £28.80

Interest (Compound)

If £240 is invested with an interest rate of 2% compounded annually, find the value of the investment after 8 years. £281.20

Currency Exchange

If £1 is worth $1.24, convert:

a) £100 to dollars; $124.00

b) $200 to pounds; £161.29

Coordinates (Midpoint)

What are the coordinates of the midpoint of the line joining:

\((3,-3) \text{ and } (15,7)\)

(9,2)

Gradient

What is the gradient of the line joining:

\((5,3) \text{ and } (8,7)\)

\(\frac{4}{3}\)

Coordinates (Square)

Here are the coordinates of 3 vertices of a square, what are the coordinates of the 4th?

\((5,2),(11,6),(1,8)\)

(7,12)

Negative Numbers

a) 11 − 20 = -9
b) 11 × (-10) = -110
c) (6−17)(7−19) = 132
d) 110 ÷ (-10) = -11
e) (-6)2 = 36

Substitution

If p = 6, q = 26 and
r = -7 evaluate:

a) 2q − p = 46
b) pq + r = 149
c) p2 − 5q - r = -87

Equations (Type 1)

Solve:

\(4x = 28\)

\(x = 7\)

Equations (Type 2)

Solve:

\(5x -3= 7\)

\(x = 2\)

Equations (Type 3)

Solve:

\(4x -6= 2x + 8\)

\(x = 7\)

Equations (Type 4)

Solve:

\(5(5x +4)+6= 126\)

\(x = 4\)

Equations (Type 5)

Solve:

\(3(5x + 5)= 2(3x + 3)\)

\(x = -1\)

Equations (Simultaneous 1)

Solve:

\(2x+3y = 22\)
\(3x+3y = 24\)

\(x = 2, y = 6\)

Equations (Simultaneous 2)

Solve:

\(3x-5y = 3\)
\(7x-20y = -18\)

\(x = 6, y = 3\)

Equations (Simultaneous 3)

Solve:

\(3x-2y = -4\)
\(5x-7y = -36\)

\(x = 4, y = 8\)

Sets (Union)

Find the union of:

{5,6,7,8,9,10} and
{1,3,6,10,15}

{1,3,5,6,7,8,9,10,15}

Sets (Intersection)

Find the intersection of:

{5,6,7,8,9,10} and
{2,6,12}

{6}

Bearings

A plane flies from point A to point B on a bearing of 189o. What bearing would it return on from B to A? 009o

Probability

A number is picked at random from the set

{6,7,8,9,10}

what is the probability it is even? \(\frac35\)

BIDMAS

Evaluate:

42 − 5 × 2 + 4

10

Simplify

Simplify the following by collecting like terms:

\(5a−5−4a−5\)

\(a-10\)

Ratio

Divide 135 in the ratio

3:6

45 and 90

Graph Linear (1)

Draw a rough sketch of the graph of:

\(2y=x-4\)

Gradient 0.5
y intercept -2

Prime Factors

Express the following number as the product of prime numbers:

180

2 x 2 x 3 x 3 x 5

Percentage (Reverse)

In a sale an item costs £96 after a 40% reduction. What was the original price?

£160

Averages

Find the mean, mode, median and range of the following:

6,7,8,9,10

Mean = 8, no mode,
median = 8 and range = 4

Time (Analogue)

What time is this?

Circle part Circle part

Time (Digital)

Sketch a clock face:

Circle part Circle part

Decimals (Recurring)

Write the following recurring decimal as a fraction in its lowest terms.

0.848484... \(\frac{28}{33}\)

Percentage (Decrease)


Decrease £160 by 35%

£104

Brackets (Linear)

Expand:

\(5(7x-4)\)

\(35x-20\)

Brackets (Quadratic)

Expand:

\((2x+2)(x-2)\)

\(2x^2-2x-4\)

Factorise (Linear)

Factorise:

\(16x-8\)

\(8(2x-1)\)

Factorise (Quadratic 1)

Factorise:

\(x^2+2x-8\)

\((x+4)(x-2)\)

Factorise (Quadratic 2)

Factorise:

\(x^2-2x-3\)

\((x+1)(x-3)\)

Circle Theorems

Which theorem?

Circle part Circle part

Standard Form 2

Find the value of:

5.18 × 10-2

= 0.0518

Standard Form 3

Write in standard form:

2150000

= 2.15 × 106

Standard Form 4

Write in standard form:

0.00584

= 5.84 × 10-3

Sequence (Quadratic)

Find the nth term:

\(12, 18, 26, 36, 48, \)

\(n^2+3n+8\)

Standard Form 5

Multiply 6 × 105
by 4 × 105 and give the answer in standard form.

= 2.4 × 1011

Equations (Quadratic 1)

Solve:

\(x^2+x-6= 0\)

\(x = 2\) and \(-3\)

Equations (Quadratic 2)

Solve this equation giving the solutions to 3 significant figures:

\(2x^2-5x-5 = 0\)

\(x = 3.27\) and \(-0.766\)

Polygon Angles

What is the size of each interior angle of a regular hexagon?

120°

Interior and Exterior angles

Change The Subject

Make \(d\) the subject of the formula
$$e=\frac{2d-1}{3}$$

$$d=\frac{3e+1}{2}$$

Basic Division 1

Calculate the value of:

5286 ÷ 6

= 881

Number Sequences 2

What is the 11th:
a) Cube number; 1331
b) Triangular number; 66
c) Fibonacci number. 89

Square Numbers

What are the three largest square numbers less than
144

121, 100, 81

Prime Numbers

What is the difference between the 5th and the 6th prime numbers?

13 - 11 = 2

Last Lesson

Write down something you learnt in the previous mathematics lesson.

Last Week

Write down something you learnt in one of the mathematics lessons last week.

Angles

Calculate \(x\).

Angle diagram Angle diagram

Decimals (Ordering)

Write down these numbers: 5, 5.5, 5.05, 0.5, 5.55, 0.55, 0.05, in ascending order.
0.05, 0.5, 0.55, 5, 5.05, 5.5, 5.55,

Lengths (Ordering)

Write down these lengths: 107cm, 17cm, 1.8m, 1.08m, 18mm, 1.7cm, in order.
1.7cm, 18mm, 17cm, 107cm, 1.08m, 1.8m,

Capacities (Ordering)

Write down these capacities: 21cl, 17cl, 18cl, 200ml, 173ml, 18ml, in order.
18ml, 17cl, 173ml, 18cl, 200ml, 21cl,

Angles with Parallels 1

Angle diagram d = 99

Angles with Parallels 2

Angle diagram h = 75

Rounding (1sf)

Round to one significant figure:
a) 62.51; 60
b) 237746; 200000
c) 69; 70
d) 0.00772; 0.008

Estimation

Round each value to one significant figure to make an estimate:$$9.8 \times 22 - 182$$\(10 \times 20 - 200 = 0\)

Pie Charts (1)

A pie chart shows the colours of 10 books. What sector angle represents the
6 red books?
216°

Graph Linear (2)

Straight Line Graph

What is the equation?

\(y=3-x\)

Pie Charts (2)

A pie chart shows the colours of 45 hats. How many green hats are represented
by a sector
angle of 176°?
22

A Mathematics Lesson Starter Of The Day


Topics: Starter | Number

  • Mr Frost, John Summers High School
  •  
  • The difference of the squares of two consequetive numbers will always equal the sum of those two numbers.

    sum of the numbers:
    a + (a-1) = 2a - 1

    Difference of the square of the numbers
    a2 - (a-1)2 = a2 - (a2 - 2a + 1)
    = 2a - 1
  • Mr Frost, John Summers High School, Flintshire
  •  
  • or

    Difference in squares
    a2 - (a + 1)2 = a2 - (a2 + 2a + 1)
    = 2a + 1

    Sum of the numbers

    a + (a + 1) = 2a + 1
  • David Longman, Bedfordshire Middle School
  •  
  • As an extension of this idea

    a² - b² = (a + b) x (a - b) wherever a is greater than b
  • Steve Eastop, Margate, Kent
  •  
  • The difference between the results of squaring each consecutive number and then subtracting the lesser result from the greater result always results in an ODD INTEGER (i.e. a positive or negative whole number indivisible by two). In other words, the result to such a calculation will always be a member of the set {… -5, -3, -1, 1, 3, 5, 7, 9, 11, ....}. In general, algebraically, let the two consecutive numbers be: (N-1) and (N) respectively.(whereby N is the larger of the two). Then (N)2 - (N-1)2 = (N2) - ((N-1)(N-1)) (expanding and simplifying) = N2 - (N2 - N - N + 1) = N2 - N2 + N + N + 1 = (2N +1). Hence, whatever integral value of N you assign, 2N will always be even and thus (2N + 1) will be odd as already stated above!

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Previous Day | This starter is for 10 October | Next Day

 

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Answers



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Laptops In Lessons

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Whether your students each have a TabletPC, a Surface or a Mac, this activity lends itself to eLearning (Engaged Learning).

Laptops In Lessons

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Student Activity

 

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Uniqueness Game

 

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