Rounding
Round to the nearest tens place.
11
10
Add.
9+6
15
Subtract.
19-4
15
Estimate the sum.
12+7
20
Sami scored 84 points in the first round of a new computer game. He scored 21 more points in the second round than in the first round. What was Sami’s total score?
Round to the nearest tens place.
38
40
Add.
14+8
22
Subtract.
33-10
23
Estimate the sum.
432+489
920 OR 900
Anna scored 265 points in a computer game. Greg scored 142 points. How many more points did Anna score than Greg?
Anna scored 123 more points than Greg.
Round to the nearest tens place.
374
370
Add.
78+92
170
Subtract
47-18
29
Estimate the sum.
327+581
910 OR 900
There are 500 sheets of paper in the pack Hannah bought. She has used 137 sheets already. How many sheets of paper does Hannah have left?
Hannah has 363 sheets of paper left.
Round to the nearest hundreds place.
491
500
Add.
140+98
238
Subtract.
900-9
891
Estimate the difference.
73-22
50
There were 378 visitors to the science museum on Friday. There were 409 visitors on Saturday. How many more people visited the museum on Saturday?
There were 31 more people at the museum on Saturday.
Round to the nearest hundreds place.
4,260
4,300
Add.
639+125
764
Subtract.
683-394
289
Estimate the difference.
761-528
230 OR 300
Ravi scores 247 points in a video game. How many more points does he need to score a total of 650?
Ravi needs 403 more points.