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Rounding Off Using Number Line. Round off 115 to the nearest hundred. 0. 100. 200. 300. 400. 500. 115 is between 100 and 200. Rounding Off Using Number Line. Round off 115 to the nearest hundred. X. 115. 100. 120. 140. 160. 180. 200. 115 is nearer to 100 than to 200. - PowerPoint PPT Presentation
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Rounding Off Using Number Line
Round off 115 to the nearest hundred
115 is between 100 and 200
0 400300200100 500
Rounding Off Using Number Line
Round off 115 to the nearest hundred
100 180160140120 200115
115 is nearer to 100 than to 200
115 is when rounded off to the nearest hundred
100
X
115 100
Rounding Off Using Number Line
Round off 650 to the nearest hundred
650 is between 600 and 700
500 900800700600 1000
Rounding Off Using Number Line
Round off 650 to the nearest hundred
600 680660640620 700
650 is halfway between 600 and 700halfway
650
650 is when rounded off to the nearest hundred
700
X
650 700
Rounding Off Using Number Line
Round off 874 to the nearest hundred
874 is between 800 and 900
500 900800700600 1000
? ?
Rounding Off Using Number Line
Round off 874 to the nearest hundred
800 880860840820 900874
874 is nearer to 900 than to 800
874 is when rounded off to the nearest hundred
900
X
874 900
?
Rounding Off Using Number Line
600 680660640620 670 690650 700
What are the other numbers that can be rounded off to 700 aside from 650?
Rounding Off Using Number Line
660 740720700680 750670 690650 710 730
651
652
653
654
655
656
657
658
659
661
662
663
664
665
666
667
668
669
651 - 749
711
725
735
745
749
649
yes
no
no
What are the other numbers that can be rounded off to 700 aside from 650?
What are the numbers in the tens place that can be rounded off to the nearest hundred after the given number?
1 2 3 4 5 6 7 8 9
Example: 1 5 9 200
100 200159
X
200 is the nearest hundred after 159
What are the numbers in the tens place that can be rounded off to the nearest hundred after the given number?
1 2 3 4 5 6 7 8 9
Example: 6 7 7 700
600 700677
X
700 is the nearest hundred after 677
What are the numbers in the tens place that can be rounded off to the nearest hundred before the given number?
1 2 3 4 5 6 7 8 9
Example: 7 1 9 700
700 800719
X
700 is the nearest hundred before 719
What are the numbers in the tens place that can be rounded off to the nearest hundred before the given number?
1 2 3 4 5 6 7 8 9
Example: 9 4 8 900
900 1 000948
X
900 is the nearest hundred before 948
The number of tourist who visited Singapore last year was 600 when rounded off to the nearest hundred. What could be the actual number of tourist be?
500 700 600
550
560
570
580
590
610
620
630
640
650
540
no
no
550 650
550 – 649
What could be the maximum number of tourist who visited Singapore last year?
549 no
The number of tourist who visited Singapore last year was 600 when rounded off to the nearest hundred. What could be the actual number of tourist be?
500 700 600
550
560
570
580
590
610
620
630
640
650
540
no
no
550 650
550 – 649
What could be the minimum number of tourist who visited Singapore last year?
The number of tourist who visited Singapore last year was 630 000 when rounded off to the nearest thousand. What could be the actual number of tourist be?
629 000 631 000630 000
629 500
629 600
629 700
629 800
629 900
630 100
630 200
630 300
630 400
630 500
629 400
no
no
629 500 630 500
629 500 – 630 499
Challenge
