Rounding
Round to the nearest tens using number line and place value chart
856
850
10,594 - 5,324
5,270
There are 310 passengers in a first train car. There are 156 passengers in the second car. About how many more passengers are there in the first car.
There are about 100 more passengers in the first car.
123+456
579
963 -852
111
Round to the nearest hundred using number line and place value chart
896
900
100 - 56
44
The first bus had 96 passengers and the second bus had 107 passengers. About how many passengers are there altogether?
There are about 200 passengers altogether
789 + 321
1,110
78,521 - 23,111
55,410
Round to the nearest Thousands using number line and place value chart
18,695
19,000
1,289 -987
302
In a city, there are 45,960 electric cars and 96,113 gas cars. About how many more gas cars than electric cars?
There are about 50,000 more gas cars.
5,641 +8,974
14,615
3,654 - 2,412
1,242
Round to the nearest Ten Thousand using number line and place value chart
23,245
20,000
5,206- 2,190
3,016
127,456 - 123,231
4,225
10,000 + 7,895
17,895
93,852 - 21,661
72,191
Round to the nearest Hundreds using number line and place value chart
27,236
27,200
10,109 - 8,762
1,347
In the morning, there are about 452 planes taking off from the airport and in the evening there are about 127 planes taking off. About how many planes take off in one day?
There are about 600 planes taking off in one day.
258 +369
627
87 - 54
33