Rounding Word Problems
- 1. Rounding with Word Problems
- 2. Remember Remember! When working with money we usually write the number correct to 2 dp. Eg. 12.125 Dh = 12.13Dh
- 3. 149 ÷ 6 = 24.8333 Six people had lunch. The bill came to Dh 149. How much does each person have to pay? = 24.83 Dh
- 4. Try These 2 Dinner for twelve people costs Dh 947. How much does each person have to pay? Nine children share Dh 254 between them. How much does each child get? Eight children share Dh 521 between them. How much does each child get? Page 118 947 ÷ 12 = 78.9166 = 78.92 Dh 254 ÷ 9 = 28.2222 = 28.22 Dh 521 ÷ 8 = 65.125 = 65.13 Dh
- 5. 18 ÷ 4 = 4.5 One box can hold 4 pens. How many boxes do I need if I have 18 pens? I need 4 or 5 boxes? I need 5 boxes
- 6. c. Each shelf in a library will hold 52 books. How many shelves are needed for 348 books? d. Disk boxes hold 15 disks. Muna has 47 disks how many boxes does she need? A bus can hold 40 people. How many buses are needed to take 130 people on a trip? b. There is as maximum of 20 students per section. How many sections are needed for 155 students? Page 120 130 ÷ 40 = 3.25 3 or 4 buses ? 4 buses Try These 3 155 ÷ 20= 7.75 7or 8 sections? 8 sections 348÷ 52= 6.69 6 or 7 shelves? 7 shelves 47÷ 15= 3.13 3 or 4 boxes ? 4 boxes
- 7. 14÷ 3= 4.666 I need 3 eggs to bake a cake.. How many cakes can I bake if I had 14 eggs? I can bake 4 or 5 cakes? I can bake 4 cakes
- 8. Page 122 18 ÷ 5 = 3.6 3 or 4 teams? 3 teams Try These 4 9 ÷ 6 = 1.5 1 or 2 dishdashas? 1 dishdasha 94 ÷ 25 = 3.76 3 or 4 books? 3 books 18 ÷ 4 = 4.5 4 or 5 cakes? 4 cakes c. It takes 25 sheets of paper to make a note book. How many books can you make with 94 sheets of paper? d. Cakes cost Dh 4 each. Kawthe has Dh 18, how many cakes can she buy? a. A volleyball team has 5 players. How many teams can you have with 18 people? b. You need 6 metres of material to make a dishdasha. How many dishdashas can you make with 9 metres of material?
- 9. Exercise 3.4 page 123 11 employees buy a present for their manager’s birthday. The present costs Dh 250. How much does each employee have to pay? 37 students are going on a trip. It costs Dh 400 to hire the bus for the trip. How much does each student have to pay? A lunch for 30 people costs Dh 710. How much does each person have to pay? 400 ÷ 37 = 10.8108 = 10.81 Dh 710 ÷ 30 = 23.6666 = 23.67 Dh 250 ÷ 11 = 22.727 = 22.73 Dh
- 10. Exercise 3.4 page 124 600 ÷ 7 = 85.714 = 85.71Dh 12 ÷ 8= 1.5 = 1.50 Dh 615 ÷ 20 = 30.75 30 or 31 sections? There are 615 new students at a college. How many sections of 20 students can be made? Seven employees are paid Dh 600 in total for finishing a job. How much is each employee paid? Eight apples cost Dh 12. What is the cost of one apple? 31 sections
- 11. a. Six children share a bag of 70 sweets. How many sweets does each child get? Exercise 3.4 page 125 70 ÷ 6 = 11.666 11 or 12 sweets? 11 sweets c. A car can hold a maximum of 5 people. How many cars are needed to take 27 people on a trip? b. A pencil costs Dh 3. How many pencils can Ahmed buy for Dh 20? e. A croissant costs Dh 2. How many croissants can you buy for Dh 11? d. Eggs are packed in boxes of 6. How many boxes are needed to pack 34 eggs? 20 ÷ 3 = 6.66 6 or 7 pencils? 6 pencils 11 ÷ 2 = 5.5 5 or 6 croissants? 5 croissants 34 ÷ 6 = 5.666 5 or 6 boxes? 6 boxes 27 ÷ 5 = 5.4 5 or 6 cars? 6 cars