Rounding to 10
Round 72 to the nearest 10.
Show number line.
70
Round 580 to the nearest hundred.
Show the number line.
600
A pair of AirPods costs $219. A phone costs $291. Which item costs more money? Show your work.
$219 < $291; A phone costs more money.
Round 58 to the nearest 10.
Show the number line.
60
Round 350 to the nearest hundred.
Show the number line.
400
Order the heights of the students from least to greatest. Which student is the shortest? Which student is the tallest?
Student A - 315 cm.
Student B - 153 cm.
Student C - 513 cm.
B, A, C; Tallest: C, Shortest: B
Round to the nearest 10 to estimate each sum or difference.
478 + 283 =
480 + 280 = 760
Round to the nearest 100 to estimate each sum or difference.
278 + 435 =
300 + 400 = 700
There are 238 adult tickets, 361 senior tickets, and 212 student tickets sold for a play. Round to the nearest 10 to estimate the total number of tickets sold.
240 + 360 + 210 = 810 tickets sold
Round to the nearest 10 to estimate each sum or difference.
699 - 404 =
700 - 400 = 300
Round to the nearest 100 to estimate each sum or difference.
799 - 503 =
800 - 500 = 300
A dinosaur bone is 315 cm. long. A human bone is 84 cm. long. Round to the nearest 10 to estimate how much longer the dinosaur bone is than the human bone.
320 - 80 = 240 cm. longer
Newton says 382 + 405 is about 800. Did Newton round to the nearest ten or to the nearest hundred to estimate the sum?
Nearest 10; 390 + 410 = 800
Descartes rounds 201 to 200. to what place does he round?
Nearest 100
There are 382 adult tickets, 631 senior tickets, and 221 student tickets sold for a carnival. Round to the nearest hundred to estimate the total number of tickets sold.
400 + 600 + 200 = 1,200 tickets sold