Decimal and Real Number System Review

Presentation

•

Mathematics

•

5th - 7th Grade

•

Medium

•

CCSS

5.NBT.A.4, 5.NBT.A.3A, 3.OA.D.9

Standards-aligned

Deborah Johnson

Used 4+ times

FREE Resource

4 Slides • 11 Questions

Decimal and Real Number System Review

Important Facts for the Real Number System

All integers are rational (can be written as a fraction) and cannot have decimals
Natural and Whole numbers cannot be negative
Decimals that terminate (end) or have a repeating pattern are rational
Decimals that go on forever with no repeating pattern are irrational
ALL NUMBERS ARE REAL

For another review of the Real Number System, go to the link below.

You might need to type it in the search bar in a different tab

shorturl.at/yQSUV

Multiple Choice

All numbers can be written as a fraction

True

False

Multiple Select

Select the option(s) that apply.

-14.57 is ...

Irrational

Terminating decimal

Whole

Integer

Rational

Multiple Select

Select the option(s) that apply.

\frac{16}{2}

is ... (it might help to read it as a division problem)

Natural

Whole

Integer

Rational

Irrational

Multiple Select

Select all that apply.

8.77777...

Terminating decimal

Integer

Rational

Irrational

Repeating decimal

Multiple Select

Select all that apply.

\sqrt{3}

(You can use your caluclator)

Real

Rational

Integer

Irrational

Terminating decimal

Poll

How do you feel about the Real Number System?

It's easy!

I'm starting to understand it better

I'm still a little confused and need more practice

I am completely lost

Important Notes for Place Value and Rounding Decimals

If it has a "-ths" at the end, the place value is to the right of the decimal (smaller values)
You round by looking to the number to the right of the place value that you're rounding. If that number is 5 or greater, the place value you're rounding rounds up! If not, it stays the same number.

Multiple Choice

64.295 Rounded to the nearest tenth is...

64.30

64.3

64.2

Multiple Choice

2055.348 rounded to the nearest hundred is...

2055.35

2060

2055

2055.358

2100

Multiple Choice

What number is in the thousandths place?

3489.1627

Multiple Choice

What number is in the ones place?

352.57

Poll

How are you feeling about place value and rounding?

It's easy!

I'm starting to get the hang of it!

I need more practice

I'm still confused and need a lot of help

Decimal and Real Number System Review

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