Rounding

With DJ Farver-Fresh

When do we use rounding?

• Use rounding when—–The question asks for an

“estimate”–The question asks “about how

many…”

Rounding Rap

• “Find the place value, circle that numberGo to the right, put a line underIf it’s 0-4, leave the circle aloneIf it’s 5-9, circle’s gotta go..Up, Up, Up, Up!!All the other numbers, to the rightChange ‘em to 0 and say good nightRounding!”

Round to the nearest ten thousand

146,324“Find the place value, circle that number”

146,324

Round to the nearest ten thousand

146,324“Go to the right, put a line under”

146,324

Round to the nearest ten thousand

“If it’s 0-4, leave the circle alone”

What is the value of the underlined number?6Is 6 between 0-4?No—next verse

146,324

Round to the nearest ten thousand

146,324“If it’s 5-9, circle’s gotta go..

Up, Up, Up, Up!!”

146,3245

Round to the nearest ten thousand

51 6,324“All the other numbers, to the right

Change ‘em to 0 and say good night!Rounding!”

156,3240 00 0

Round to the nearest ten thousand

146,324rounded to the nearest ten thousand is

150,000

Let’s practice!

Round to the nearest hundred thousand

184,302

502,393

239,303

Round to the nearest hundred

329,019

93,397

5,391

Guess what?!

It works the same for decimals!!!!!

Round to the nearest tenth

3,393.219Find the place value, circle that number

Round to the nearest tenth

3,393.219Go to the right, put a line under

Round to the nearest tenth

3,393.219If it’s 0-4, leave the circle alone

If it’s 5-9, circle’s gotta go..Up, Up, Up, Up!!

Round to the nearest tenth

3,393.219All the other numbers, to the right

Change ‘em to 0 and say good nightRounding!”

Round to the nearest tenthSoooooo……

3,393.219Rounded to the nearest tenth is…

3,393.200or

3,393.2

Let’s practice!

Round to the nearest hundredth

345.783

1,293,393.938

0.382

Round to the nearest tenth

12.234

93.372

1,228,382.091