Draw a place value chart to show 2.8x10^2. Write the product in standard form.
What is 280
See chart.
100
What is 2.3x2?
What is 4.6
100
What is 2.2/2?
What is 1.1
100
Tina's cat weighs 2.6kg. Her dog weighs 4 times as much. How much does her dog weigh? Use an area model to solve. State your answer in standard form.
What is 10.4
see area model
200
What is 8.723 rounded to the nearest tenth?
What is 8.7
200
Use an area model to find the product of 5 and 3.7
What is 18.5
See area model.
200
What is 9.54x4?
What is 38.16
200
What is 9.6/3
What is 3.2
200
Jim rides the bus to and from school each day. A one-way trip is 8.12 kilometers. How many kilometers does he travel at the end of 3 days?
What is 48.72
300
What is 16.489 rounded to the nearest hundredth?
What is 16.49
300
Draw a place value chart to show 12.23/4
What is 3.0575
300
What is the product of 32 hundredths and 5?
What is 1.6
300
What is 21.123/4
What is 5.28075
300
Dr. Mann mixed 8.357 g of chemical A, 15.062 g of chemical B, and 5.506 g of chemical C to make
5 doses of medicine.
About how much medicine did he make in grams? Estimate the amount of each chemical by rounding to the nearest tenth of a gram before finding the sum. Show all your thinking.
What is about 29 grams?
400
What is 3+4x1/10+3x1/100 rounded to the nearest tenth?
What is 3.4
400
Use a place value chart to show how you can divide 10.42 by 2. State the answer.
What is 5.21
See chart.
400
What is 52.8x9
What is 475.2
400
What is 8.235/5
What is 1.647
400
Dr. Mann mixed 8.357 g of chemical A, 15.062 g of chemical B, and 5.506 g of chemical C to make
5 doses of medicine.
How many grams are in one dose of medicine? Explain your strategy for solving this problem.
What is 5.785g of medicine in 1 dose
500
Round each of the following decimals to the nearest hundredth and then list them in decreasing order.
15.238, 12.762, 9.565, 9.56, 15.234
What is 9.56, 9.57, 12.76, 15.23, 15.24
500
Use a place value chart to show how 2120/5 is the same as 21.2x10^2.
Explain your answer.
What is See place value charts.
2120/5 is equal to 424. You create 5 groups and divide equally into them.
21.2x10^2 is equal to 21.2x100 which equals 2120. You just moved the decimal over to the right 2 spots to show you multiplied each number's value by 100.
500
What is 2 ones 1 tenth 3 hundredths and 8 thousandths multiplied by 2
What is 4.276
500
What is 116/5
What is 23.2
500
Use an area model to explain the product of 8.5 and 6. Write the product in standard form, word form, and expanded form.