The following equations involve different quantities and use different operations, yet produce the same result. Use a place value chart and words to explain why this is true.
1 point
1
Question 2
2.
Use an area model to explain the product of 4.6 and 3. Write the product in standard form, word form, and expanded form.
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1
Question 3
3.
Compare using >, <, or =.
13 tenths + 8 tenths + 32 tenths ________ 0.13
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1
Question 4
4.
Compare using >, <, or =.
342 hundredths + 7 tenths ________ 2.42
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1
Question 5
5.
Compare using >, <, or =.
1 point
1
Question 6
6.
Compare using >, <, or =.
1 point
1
Question 7
7.
Dr. Mann mixed 10.357 g of chemical A, 12.062 g of chemical B, and 7.506 g of chemical C to make 5 doses of medicine.
a. Abour 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.
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Question 8
8.
Dr. Mann mixed 10.357 g of chemical A, 12.062 g of chemical B, and 7.506 g of chemical C to make 5 doses of medicine.
b. Find the actual amount of medicine mixed by Dr. Mann. What is the difference between your estimate and the acutal amount?
1 point
1
Question 9
9.
Dr. Mann mixed 10.357 g of chemical A, 12.062 g of chemical B, and 7.506 g of chemical C to make 5 doses of medicine.
c. How many grams are in one dose of medicine? Explain your startegy for solving this problem.
1 point
1
Question 10
10.
Dr. Mann mixed 10.357 g of chemical A, 12.062 g of chemical B, and 7.506 g of chemical C to make 5 doses of medicine.
d. Round the weight of one dose to the nearest gram.