To estimate 7.9 \div 4, Emily rounded 7.9 to 8.0. Show how to complete her estimate.
Estimate. Explain how you estimated one answer.
12.75 \div 6
Estimate. Explain how you estimated one answer.
4.6 \div 8
Estimate. Explain how you estimated one answer.
16.56 \div 6
Estimate. Explain how you estimated one answer.
0.85 \div 7
This rectangle has an area of 20.7 m^2. Estimate its width.
When Eric calculated 17.45 \div 3 on his calculator, he got this result.
5.816666667
Is his answer reasonable? Explain.
Brianna and her two friends bought a $26.99 music CD to share.
a) Estimate the cost of each person’s share.
b) Determine the cost of each person’s share. Use your calculator.
Determine each money amount. Use your calculator.
$1.75 divided five ways
Determine each money amount. Use your calculator.
$1.58 divided six ways
Determine each money amount. Use your calculator.
$40.57 divided eight ways
A package of six small Metis flags costs $12.99.
a) Determine the price of one flag. Use your calculator.
b) Estimate to show that your answer is reasonable.
Calculate.
18.9 \div 9
Calculate.
42.5 \div 5
Calculate.
7.6 \div 4
Calculate.
18.4 \div 2
Calculate.
2.0 \div 5
Calculate.
13.2 \div 6
a) Estimate to check one quotient in Question 8. Show what you did.
b) Use multiplication to check another quotient in Question 8.
The perimeter of this regular hexagon is 9.0 m. What is the length of each side?
A rectangular park measuring 4.0 km by 4.6 km is divided into 8 equal sections. What is the area of each section?
Michelle and her friends run on treadmills at their community centre. They recorded the total times and distances they ran.
a) How far did each person run each hour? Show your work.
b) Use multiplication to check one answer from Part a). Show what you did.
c) Use estimation to check another answer from Part a). Show what you did.
Calculate. Use mental math.
52.5 \div 10=?
Calculate. Use mental math.
415 \div 10
Calculate. Use mental math.
7.8 \div 100 =?
Calculate. Use mental math.
47.7 \div 100
Calculate. Use mental math.
155 \div 1000 =?
Calculate. Use mental math.
4230 \div 10 000
A 4.0 L container of apple juice is poured equally into 10 smaller containers. How much juice is in each container?
a) Calculate 45 \div 10.
b) Explain how you can use your answer in Part a) to calculate 45 \div 100.
Shelby's bike wheels turn 10 000 times. If the bike travels 21 000 m, what is the distance around her wheels?
Laura subtracted 0.5 from her age, and divided that result by 3. The final answer was 4. How old is Laura?
The blue boxes are equal in mass. What is the mass of one blue box?
Erin received $40.00 for her birthday. She spent $7.50 for a movie ticket. Then she bought a bag of popcorn for herself and each of her three friends. Now she has $10.50 left. What is the cost of each bag of popcorn?