Factors and Multiples

Area and Perimeter

100

What is the perimeter of a square with a side length of 8 cm?

What is the area of the square?

Perimeter: 32 cm

Area: 64m²

200

How do we find area of a triangle?

1/2 x base x height

OR

(base x height)/2

300

What is the area of a parallelogram with a base of 7 cm and a vertical height of 9 cm?

63 cm²

400

You have a triangle with a base of 7.5 cm and a height of 6 cm. What is the area?

45 cm²

500

SenTia school wants to build a new football pitch. They want the pitch to have a rectangular shape with a watching path around the outside of the pitch.

The total area is 100 m x 85 m, and the area of the football pitch is 5600 m². What is the area of the watching path?

2900 m²

Mixed

100

What happens when we subtract a negative number?

Example: 4 - (-10) = ?

We do addition.

4 - (-10) = 14

4 + 10 = 14

200

5 + (-6) - 10 =

-11

300

What are the factors of 84?

1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

400

What are the factors of 1228?

1, 2, 4, 307, 614, 1228

500

What are the first 12 multiples of 28?

28, 56, 84, 112, 140, 168, 196, 224, 252, 280, 308, 336

GCF

100

What is the greatest common factor of 16 and 18?

2

200

What is the greatest common factor of 14 and 70?

14

300

What is the greatest common factor of 20, 36, and 380?

4

400

What is the greatest common factor of 12, 380, and 996?

4

500

What is the greatest common factor of 48, 512, and 840?

8

LCM

100

What is the least common multiple of 4 and 6?

12

200

What is the least common multiple of 13 and 9?

117

300

What is the greatest common multiple of 20 and 30?

969

400

What are the first five common multiples of 25 and 50?

50, 100, 150, 200, 250

500

What is the least common multiple of 26 and 17?

442 (2x13x17)

Factors and Multiples

100

What are the factors of 5 and what are the first 6 multiples?

Factors: 1, 5

Multiples: 5, 10, 15, 20, 25, 30

200

What are the factors of 16 and what are the first 8 multiples?

Factors: 1, 2, 4, 8, 16

Multiples: 16, 32, 48, 64, 80, 96

300

What are the factors of 112 and what are the first 9 multiples?

Factors: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112

Multiples: 112, 224, 336, 448, 560, 672, 784, 896, 1008

400

The factors of this number are:

1, 3, 5, 15, 149, 447, 745, ?

The first 4 multiples are:

?, 4470, 6705, 8940

2235

500

What are the factors of 5000 and what are the first 12 multiples?

Factors: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000

Multiples: 5000, 10000, 15000, 20000, 25000, 30000, 35000, 40000, 45000, 50000, 55000, 60000