8.EE.3 + 4: PRE-TEST

490,000,000


Notice how the zero's are behind?
If we were to jump - which way?

TO THE WALL

Pre-Test Review

TO THE WINDOW

0.000000345


Notice how the zero's are in front?
If we were to jump - which way?

Multiple Choice

Would the number 450,000,000 have a positive integer or a negative integer

• Positive

• Negative

Multiple Choice

Would the number 0.0000003325 have a positive or negative integer?

• Positive

• Negative

If the number has a decimal - we start at the decimal

WHERE DO WE START?

If the number does not have a decimal - we start at the end

WHERE DO WE STOP?

You stop once you hit "in between" the first two non zero numbers.

**FROM LEFT TO RIGHT**

Multiple Choice

What are the first two non zero numbers (aka where will we place the new decimal) in this number:

413,459,000

• 4 and 3

• 9 and 5

• 4 and 5

• 4 and 1

Multiple Choice

What are the first two non zero numbers (aka where will we place the new decimal) in this number:

0.000001859674

• 8 and 5

• 1 and 8

• 6 and 7

• 7 and 4

HOW DO I ROUND?

If a question asks to "approximate" - what do you do?

There will be questions on the test where your answer choices don't match your number.
If you read the problem again - you'll notice the question said to "estimate" or "approximate"

5 - Up
6 - Up
7 - Up
8 - Up
9 - Up

ROUNDS UP

1 - Same
2 - Same
3 - Same
4 - Same

STAYS THE SAME

YOU ASSESS THE FIRST 2 NUMBERS

Multiple Choice

What is the best estimate of

2.333 x 10^4

• 2 x 10^4

• 3 x 10^4

Multiple Choice

What is the best estimate of

3.8 x 10^3

• 3 x 10^3

• 4 x 10^3