1.04 Real-world problems with rational numbers
Interactive practice questions
The following table gives us the temperature in different locations:
| London | $12.1$12.1 degrees |
| Beijing | $-1.09$−1.09 degrees |
| Paris | $10.2$10.2 degrees |
| Vancouver | $-10.49$−10.49 degrees |
What is the change in temperature if I fly from London to Beijing?
$13.19$13.19
$11.01$11.01
$-13.19$−13.19
If the temperature change was $22.59$22.59 degrees, what was my journey?
London to Vancouver
Paris to Beijing
Vancouver to London
Paris to Vancouver
Cairo is $30$30 degrees warmer than Beijing. What is the temperature in Cairo?
A calculator is $8.9$8.9 cm long. How far in meters will $180$180 calculators reach if laid end to end?
Three items weighing $3.41$3.41 kg, $2.58$2.58 kg and $5.79$5.79 kg are to be posted but are found to be overweight. By how much does the total weight exceed the $11.38$11.38 kg limit?
A bakery usually bakes $130$130 muffins per hour during its $5$5-hour baking shift. On a daily average, $110$110 muffins are sold to walk-in customers priced at $\$1.75$$1.75 each. The remaining muffins are sold to a local coffee shop, which pays $50c$50c per muffin.
How much, in dollars, can the bakery expect to earn each day from muffin sales to the coffee shop?