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A Teacher-Led PresentationCalifornia Math Standard: 4.NS.1.3
The student will identify
(orally and in writing)
Round whole numbers through the millions to the nearest ten, hundred, thousand, ten thousand, or hundred thousand.
Roundingto the nearest
ten thousand & hundred thousand
Place Value Chart
2 9 3 5 1 8 4 7 6
Rules to Rounding
• First: Find the location of the number by looking at its place value.
• Second: Look to the right of the number to be rounded.• Third: Is the number to the right 5 or above? Or is it 4 or
lower?• Fourth: If it is 5 or above add 1 to the number to be
rounded.• Fifth: If it is 4 or lower, keep the number to be rounded
the same.• Sixth: After you round your number, finish the rest of the
number off with zeroes.
Round this number to the nearest ten
thousand.127,983
120,000 130,000
The 2 is in the ten thousands place.
Look to the right . The 7 helps you decide.
Will the 2 stay the same or become a 3.
Round this number to the nearest ten
thousand.683,157
680,000 690,000
The 8 is in the ten thousands place.
Look to the right . The 3 helps you decide.
Will the 8 stay the same or become a 9?
Round this number to the nearest hundred
thousand.205,983
200,000
The 2 is in the hundred thousands place.
Look to the right . The 0 helps you decide.
Will the 2 stay the same or become a 3?
300,000
Round this number to the nearest hundred
thousand.631,248
600,000
The 6 is in the hundred thousands place.
Look to the right . The 3 helps you decide.
Will the 6 stay the same or become a 7?
700,000
Can you identify:
• Which number is in the given place?• Which number will help you decide?• What is the correct answer?
Let’s Practice Together
Round this number to the nearest hundred
thousand. 631,248
600,000
Which number is in the hundred thousands place?
Which number will help you decide how to round?
700,000
Which is the correct answer?
Round this number to the nearest hundred
thousand. 562,098
500,000
Which number is in the hundred thousands place?
Which number will help you decide how to round?
600,000
Which is the correct answer?
Round this number to the nearest hundred
thousand. 695,271
600,000
Which number is in the hundred thousands place?
Which number will help you decide how to round?
700,000
Which is the correct answer?
Try These On Your Own
Round to the nearest hundred thousand:
A. 349,128
B. 254,498
C. 561,490
D. 789,120
E. 451,308
300,000
600,000
300,000
500,000800,000
Try These On Your Own
Round to the nearest
hundred thousand:
F. 279,169
G. 174,495
H. 597,341
I. 148,743
J. 63,620
300,000
600,000
200,000
100,000
100,000
Try These On Your Own
Round to the nearest ten thousand:
A. 349,128
B. 254,498
C. 561,490
D. 789,120
E. 451,308
350,000
560,000
250,000
450,000
790,000
Try These On Your Own
Round to the nearest ten thousand:
F. 279,169
G. 174,495
H. 597,341
I. 148,743
J. 63,620
280,000
600,000
180,000
60,000
150,000
