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.
Use an area model to explain the product of 4.6 and 3. Write the product in standard form, word form, and expanded form.
Compare using >, <, or =.
13 tenths + 8 tenths + 32 tenths ________ 0.13
Compare using >, <, or =.
342 hundredths + 7 tenths ________ 2.42
Compare using >, <, or =.
Compare using >, <, or =.
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.
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?
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.
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.