mathematic PowerPoint

By: Kiowa CrawfordAnorah Sherwood

Chapter 1

Whole number estimation

Whole number estimation, addition example: 28 round each 30+114 # to the +110_____ nearest ten. _____

Round 28 to 30 and 114 to 110.

For example, 28 is closer to 30 so its rounded to 30, and 114 is closer to 110, because its below the 5 mark, we round it down to 110.

Whole number Subtraction Example: 208 round to 200-114 the nearest -100_____ hundred. _____ 94 100Round 208 down to 200 and 114 down to 100.

These numbers are rounded down because they are not greater then 50.

Exponents

Example: 510x10x10x10x10=10

The 5 listed above the 10 is called the exponent and the 10 is the base.

Exponents give you an easier way of writing out problems Multiplying itself Multiple times.

Order of operations

Example:7+(11-2)

When you see a problem like this, you Multiply what’s in parentheses' first.

Then you solve the rest of the problem.