Are You On Track?Are You On Track?Estimation, Rounding andEstimation, Rounding and

YOU!YOU!

Estimation StationEstimation Station

Welcome to the Estimation Welcome to the Estimation Station!Station!

All aboard for All aboard for Rounding to the Rounding to the nearest:nearest:

• HundredHundred• ThousandThousand• Ten thousandTen thousand

First Stop…First Stop…

Round this number to the nearestRound this number to the nearest hundredhundred....

1,7661,766A.A. 1,7001,700B.B. 1,8001,800C.C. 1,0001,000

Super We Are On Our Way Super We Are On Our Way To The Next Stop!To The Next Stop!

Toot! Toot! Let’s do one more before Toot! Toot! Let’s do one more before we leave for our next destination!we leave for our next destination!

Round to the nearest Round to the nearest hundredhundred::

2,4242,424

A. 2,420A. 2,420

B. 2,400B. 2,400

C. 2,520C. 2,520

OOPS!OOPS!We’re a little off track!We’re a little off track!

Remember when rounding we look at Remember when rounding we look at the number to the right of the place the number to the right of the place value we are rounding to…for value we are rounding to…for example:example:

1,41,45566

The five tells the four to round up, The five tells the four to round up, because we know if the number is five because we know if the number is five or above rounds up, if the number is or above rounds up, if the number is four or below round down!four or below round down!

Click here to try again Click here to try again

I Think I can, I think I canI Think I can, I think I can

Chugging Right AlongChugging Right Along

How about trying to round a How about trying to round a number to the nearest number to the nearest ten ten thousandthousand::

10,43210,432

. 11,000. 11,000

10,50010,500

10,00010,000

Wow! You’re Ready For The Next StopWow! You’re Ready For The Next Stop

Round to the nearest Round to the nearest ten thousandten thousand 14,55014,550

A. A. 14,00014,000 B. B. 14,50014,500 C. C. 13,00013,000

What Was That Rule?What Was That Rule?

What are we missing?What are we missing? To round up look to the number to To round up look to the number to

the _____ if the number is five or the _____ if the number is five or above then you round up!above then you round up!

A. LeftA. Left B. RightB. Right C. Left or RightC. Left or Right

Whoa! Put the Brakes On!Whoa! Put the Brakes On!

• To round up look to the number to To round up look to the number to the the rightright, if the number is five or , if the number is five or above then round up!above then round up!

» 3,3,556262» If we are rounding to the nearest If we are rounding to the nearest hundredhundred

then we look at the six (remember the then we look at the six (remember the number to the right of the number in the number to the right of the number in the hundredshundreds place). Ok, six is five or above place). Ok, six is five or above so I would round up! Which is the correct so I would round up! Which is the correct answer?answer?

» A. 3,500A. 3,500» B. 3,600B. 3,600» C. 3,560C. 3,560

YES! Success!YES! Success!We Are Rolling Down the Track!We Are Rolling Down the Track!

Try rounding to the nearest Try rounding to the nearest hundred thousandhundred thousand

101,754101,754

A. 101,000A. 101,000 B. 100,000B. 100,000 C. 101,750C. 101,750

That’s the Ticket!That’s the Ticket!

Great! Today we went on an adventure and practiced how to round numbers to the nearest hundred, thousand and ten thousand. Are you ready to try a super challenge?

This number has been rounded to the nearest hundred700Which one of these numbers did I round?

A. 550B. 640C. 725

Hold the Train!Hold the Train!

We learned today that when a We learned today that when a number is five or above we round number is five or above we round up. When the number is 4 or below up. When the number is 4 or below we round down. we round down.

Lets try rounding this number to the Lets try rounding this number to the nearest nearest hundred 670hundred 670

A.A.600600

B.B.500500

C.C.700700

You Did It!You Did It!

You remembered when you round You remembered when you round to the nearest to the nearest hundredhundred you need you need to look at the place value to the to look at the place value to the right which in this case is the right which in this case is the tenstens place and see if it was 5 or above, place and see if it was 5 or above, since it was you knew to round up!since it was you knew to round up!

670 rounded to the nearest 670 rounded to the nearest hundred is 700! Now let’s try hundred is 700! Now let’s try rounding to the rounding to the nearest thousandnearest thousand!!

All Aboard to the Thousands PlaceAll Aboard to the Thousands Place

Okay, we know to round the number Okay, we know to round the number to the right of the place value we are to the right of the place value we are rounding either up or down depending rounding either up or down depending on the number. Above five round up! on the number. Above five round up! Four or below round down!Four or below round down!

Round this number to the nearest Round this number to the nearest thousandthousand 6,4416,441

A. 6,500A. 6,500 B. 6,400B. 6,400 C. 6,000C. 6,000

Yes, Yes, Yes!Yes, Yes, Yes!

You are right on track! You knew that You are right on track! You knew that since the number to the right of the since the number to the right of the thousandthousand place (in the number 6441) place (in the number 6441) was a 4 that you would round down to was a 4 that you would round down to 6,000. How about a challenge? Let’s 6,000. How about a challenge? Let’s try rounding a number to the nearest try rounding a number to the nearest ten thousands ten thousands place!place!

11,32911,329 A. 11,300A. 11,300 B. 11,000B. 11,000 C. 10,000C. 10,000

OOPS! What was the Rule?OOPS! What was the Rule? When rounding to the nearest When rounding to the nearest tenten

thousandthousand, look at the number to the , look at the number to the right of the right of the ten thousand ten thousand spot which spot which would be the thousands place and see would be the thousands place and see if the number is 5 or above. If it is if the number is 5 or above. If it is then round up! If it is 4 or below, then round up! If it is 4 or below, round down. round down.

12,34912,349 A. 12,300A. 12,300 B. 13,000B. 13,000 C. 12,000C. 12,000

Right On!Right On! It seems you have mastered It seems you have mastered

rounding to the nearest rounding to the nearest ten ten thousandthousand! Try one more to the ! Try one more to the nearest nearest ten thousand ten thousand place.place.

74,68274,682– A. 74,600A. 74,600– B. 74,000B. 74,000– C. 70,000 C. 70,000

Try One More!Try One More! You are close, how about one more? You are close, how about one more?

Remember when rounding you look to Remember when rounding you look to the number to the right of the place the number to the right of the place value you are rounding. If it is 5 or value you are rounding. If it is 5 or above, round up! If it is 4 our below above, round up! If it is 4 our below round down! round down!

Try this one to the nearest Try this one to the nearest

tenten thousand 14,986thousand 14,986 A. 14,000A. 14,000 B. 15,000B. 15,000 C. 14,900C. 14,900

Try this Challenge!Try this Challenge!

With what you have learned about With what you have learned about rounding; round this number to the rounding; round this number to the nearest nearest hundredhundred, , thousandthousand, AND , AND tenten thousandsthousands place! place! 11,64511,645

A. 600A. 600 11,00011,000 11,00011,000 B.B. 600600 10,00010,000 11,00011,000 C. 700C. 700 10,00010,000 11,00011,000

You have Completed this Rounding You have Completed this Rounding Challenge!Challenge!

You have mastered rounding to the You have mastered rounding to the nearest hundred, thousand and nearest hundred, thousand and then thousands place! The rules then thousands place! The rules are simple!are simple!

If the number to the right of the If the number to the right of the place value you are rounding is 5 place value you are rounding is 5 or above…round up! If the number or above…round up! If the number to the right of the place value is 4 to the right of the place value is 4 or below round down!or below round down!

Final Challenge!Final Challenge!

When you go home tonight…teach When you go home tonight…teach your Mom or your Dad or your your Mom or your Dad or your Grandma or your brother or sister or Grandma or your brother or sister or whomever is home with you tonight whomever is home with you tonight what you learned! Give them a few what you learned! Give them a few problems to try rounding to the problems to try rounding to the nearest, hundred, thousand or ten nearest, hundred, thousand or ten thousand! Remember to explain the thousand! Remember to explain the simple rule…five or above round up! simple rule…five or above round up! Four or below round down! Four or below round down!