Estimate the sum: 79 + 272
About 350
Linh sold 117 Tra Dao and 289 Tra Da. How many teas did she sell?
About 400
Last year, 227 students signed up for soccer and 139 signed up for volleyball. About how many children signed up all together?
About 350
Frank estimate 521 + 82 as 600. Is his estimate high or low?
Low
Estimate the sum: 640 + 192
About 850
Estimate the sum: 119 + 408
About 500
Billy estimated 246 + 585 as 700. Is his estimate high or low?
Low
Estimate the sum: 198 + 389
About 600