Math and Science - Fourth Grade / Rounding

Unit: Rounding

Standards: 4.NBT.3 Use place value understanding to round multi-digit whole numbers to any place.
- How does knowledge of the midpoint help you when rounding?
- What information is needed to round a number to the thousands place?
- Why can a rounded number have multiple numbers that round to it?
- Do we round in real life?
Rounding - Making a number simpler but keeping its value close to what it was

Midpoint - The number halfway between two benchmark numbers

Estimate - the act of rounding
Benchmark number -Two numbers based on the place you are rounding to that a given number falls between

Example Using Number Lines:

http://learnzillion.com/lessons/524-round-numbers-to-the-leading-digit-using-a-number-line

Websites:

I have listed several websites below that will be helpful to you during this unit. Some of the websites have online games, others have worksheets that may help you practice with these skills. Feel free to use as much or as little as you'd like.

Rounding PacMan

http://www.ixl.com/math/grade-4/rounding

Rounding to nearest 100 http://www.aaamath.com/est32_x3.htm

Rounding to nearest 1000 http://www.aaamath.com/est41cx2.htm

Rounding to nearest 10,000 http://www.aaamath.com/est41dx2.htm

Rounding to nearest 100,000 http://www.aaamath.com/est41ex2.htm

Rounding Flash Cards http://www.aplusmath.com/Flashcards/rounding.html

Connect Four (2 players-They must round, then add on this game) http://www.shodor.org/interactivate/activities/EstimatorFour/

TRIPLES with EMMA

Unit: Rounding