Evaluate:
46.01 + 0.09
7.411 + 6.247
12.89 + 34.11
36.97 - 21.62
8.79 - 6.33
0.5 \times 1000
0.471 \times 5
2.2 \times 4
1.2 \times 3.2
4.23 \times 2
4.8 \times 8
2.68 \times 2.31
\dfrac{0.005\,34}{0.006}
\dfrac{0.247}{0.019}
9.2768 \div 2.08
56 \div 0.7
1.2 \div 0.3
420 \div 0.7
8.1 \div 0.9
393.68 \div 7
36.53 \times 63 \div 9
6.42 - 8.2 \times 0.7 + 4.67
Evaluate 2.270\,46 \div 0.474. Round your answer to two decimal places.
For the following expressions:
Estimate the answer by rounding both values to the nearest whole number.
Find the answer using a calculator.
Hence, find the difference between the estimate and the actual answer.
Suggest a way to improve the accuracy of your estimate.
6.61 + 2.85
9.66 - 7.88
11.59 \div 4.44
For each of the following expressions:
Estimate the answer by rounding both values to the nearest whole number.
Find the answer using a calculator. Round your answer to two decimal places.
1.29 \times 3.42
26.99 \div 8.98
A calculator is 8.9\text{ cm} long. How far will 130 calculators reach if laid end to end? Give your answer in metres.
How many pieces of steel, each 4.25\text{ m} long, can be cut from a wire 153\text{ m} long?
A piece of cord 2.87\text{ m} long is cut evenly into smaller pieces of 0.07\text{ m} each. How many of these pieces can be cut?
Dave used a calculator to evaluate 6.573 \times 8.03 but forgot to enter the decimal points. The answer he got was 5\,278\,119. What should the answer have been?
Maria runs 50.2 \text{ m} in 15 seconds. If she continues running at the same speed, how far can she run in 2 minutes?
Sebastian owes \$47.59 to each of his 3 friends. How much money does he owe altogether?
Three items weighing 3.41\text{ kg}, 2.58\text{ kg} and 5.79\text{ kg} are to be posted but are too heavy to send. By how much does the total weight exceed the 11.38\text{ kg} limit?
At 10 pm, the temperature in Victoria is 16.7\degree \text{C}. Each hour the temperature decreases by 1.87\degree\text{C}. What is the temperature 5 hours later?
Christa is creating a 3-minute slide show with pictures from her holiday. Each picture will be displayed for 4.5 seconds.
How many seconds are in 3 minutes?
How many pictures can she show in 3 minutes?
Brad is currently \$18 overdrawn in his account. He knows that he needs to pay a \$61.61 bill from this account tomorrow. How much does he need to add to this account so he can pay his bill tomorrow?
A diver is 3.5 metres below the surface of the water. He descends 1.47 metres each second for 3 seconds, then rises 0.46 metres/second for 6 seconds. The level at the surface is 0 metres, and 1 metre below is represented by - 1 metres.
Find the depth of the diver after 9 seconds.
The diver sees a turtle near the surface and needs to get to a depth of 0.35 metres below the surface within 4 seconds to snap the perfect shot. How many metres does he need to rise each second, assuming he will rise at a constant speed?
Mae earns \$36.43 per hour working as a call center operator. If she works 20.5 hours per week, find her weekly wage.