1. Sandra, Deacon, and Breanna read a total of 5 + 6 + 7 = 18 books. Since one book was read by all three, it was counted three times in that total. To find the number of different books, subtract the two extra counts of the shared book: 18 - 2 = 16 different books.
2. Sara needed 8 test tubes total. The first experiment used 2, so the remaining 6 test tubes were split evenly between the other two experiments. Each of the other two experiments required 6 ÷ 2 = 3 test tubes.
3. Branson and Beatrice combined their allowances: $7 + $7 = $14. They spent $12 on a movie, leaving $14 - $12 = $2. They bought $1 containers of fruit salad with the remaining money, so they bought 2 ÷ 1 = 2 containers. Splitting the containers evenly, each got 2 ÷ 2 = 1 container of fruit salad.
4. Before breaking his arm, Cam typed 9 words per minute. In 5 minutes, he typed 9 × 5 = 45 words. After breaking his arm, he typed 6 words per minute. In 5 minutes, he typed 6 × 5 = 30 words. The difference is 45 - 30 = 15 words.
5. Gisselle saved $6 per week for 8 weeks: 6 × 8 = $48. The bicycle cost $50, so she had 50 - 48 = $2 too little.
6. The problem does not provide enough information to determine the exact number of hours Annie and Dustin spent on their course. It only states they spent “most of their waking hours” over “several weekends,” which is not quantifiable without additional data. Therefore, the number of hours cannot be calculated from the given information.
Parent Tip: Review the logic above to help your child master the concept of multi step equation word problems worksheet.
