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Practice Express all answers in lowest terms. Problems and Applications 28. Asia covers about Write the addition indicated by each diagram and 10 of the area of all find the sum. the continents, and Africa covers - . What 1. fraction of the area of the continents do Asia and Africa cover together? 29. In a full set of permanent teeth, - of the 2 . teeth are incisors, - are premolars, and - are molars. What fraction of all the teeth are incisors, premolars, or molars? 3. 30. Quebec and Ontario together cover about + of the area of Canada. The Territories cover about -, and the Prairie provinces Add. about -. What fraction of the area of Canada do these regions cover together? + + O/ I UI / 31. Nada made a snack by combining = of a 6. + + bowl of granola with - of a bowl of chopped Fidd. banana and - of a bowl of yogurt. Did one 8. 9. 9 + 10. 12 + bowl hold all the ingredients at one time? A / W W/ N Explain. 11. + 12. + 13. m/ co + Estimate, then add. 14. 2 4 15. 3- co / u 16. 4 -+ 17 17. 3- + 24 Estimate, then add. 32. In his first two hockey games of the 18. 14+ 1 19. 23 + 14 season, Kent played about 1- periods and 20. 23+ 17 21. 1-+2- 13 periods. About how many periods in all 10 did he play? 22. 34+43 3. Write 2 different fractions Estimate, then add. a) with a sum of - b) with a sum of 1- 25. 2+ +3 34. Write a problem that involves the addition 24. co / w 8 + + + of fractions or mixed numbers. Have a 26. =+ 7 27. 14+ 2-+ 3 classmate solve your problem. 185