- Strategy: Guess and test. 89þ 9 ¼98.
- Strategy: Guess and test. 32 9 ¼23.
- Strategy: Make an organized list. 6 twenty-five cent stamps and 4
fifteen-cent stamps. - Strategy: Guess and test. 29 inches and 58 inches.
- Strategy: Make an organized list. 4 ways.
- Strategy: Work backwards. 10 candy bars.
- Strategy: Make an organized list or guess and test. Father’s age is 36,
son’s age is 12. - Strategy: Solve a simpler problem. 120 ways.
- Strategy: Draw a picture. Sue.
266 LESSON 21 Using Other Strategies