7C Math - Dec 7

Exponents

100

6³

216

200

2⁴

16

300

3²

9

400

4³ - 20

44

500

23 - 2³ + 9

24

Order of Operations

100

what does BEDMAS stand for?

Brackets

Exponents

Division & Multiplication (in order from left to right)

Addition & Subtraction (in order from left to right)

200

2 x (10 + 7)

34

300

(10 - 2 x 3) + (2 x 1)

6

400

2.6 x (3.1 + 2.3 - 4)

3.64

500

(4.1 x 2)² + 12.24 - 2³

71.48

Decimals

100

 the digit is the thousandths place 34.2564

6

200

3.56 - 3.4829 =

0.0771

300

Round to the nearest hundredth

12.5789

12.58

400

Round to the nearest tenth

1.89356

1.9

500

1.34 + 1.3756

2.7156

Operations with Decimals

100

3.6 x 1.5

5.4

200

4.38 + 1.9 + 24

30.28

300

234 - 1.436

232.564

400

4.1 x 2.575

10.5575

500

28.4 divided by 0.04

710

Mixed Bag

100

What is the divisibility rule for 3?

Add the digits. If the sum of the digits is divisible by 3 the number will be divisible by 3.

eg. 279 

2 + 7 + 9 = 18 (18 is divisible by 3)

YES - 279 is divisible by 3!

200

How many days are there in a year?

365 (unless it is a leap year - that has 366 days)

300

The perimeter of a rectangle that has a length of 

20.5 ft. and a width of 6.3 ft.

Remember: P = 2b + 2h

P = 2b + 2h

P = 2(20.5) + 2(6.3)

P = 41 + 12.6

P = 53.6 ft

Therefore the perimeter of the rectangle is 53.6 ft.

400

The area of a square that has a side that is 8.24 m. 

A = bh

A = bh

A = 8.24(8.24)

A = 67.8976 m²

Therefore, the area of the square is 67.8976 m²

500

Is lunch at 12:00am or 12:00pm?

12:00pm - 12:00am is midnight!