1. 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.
4.13 × 103 = 4130 413,000 ÷ 102 = 4130
Question 2
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.
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. 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.
Question 7
7.
4b. Find the actual amount of medicine mixed by Dr. Mann. What is the difference between your estimate and the actual amount?
Question 8
8.
4c. How many grams are in one dose of medicine? Explain your strategy for solving this problem
Question 9
9.
4d. Round the weight of one dose to the nearest gram.