Understanding Percent of a Number Problems

The video tutorial from MooMooMath and Science teaches how to solve percent of a number problems using a mnemonic device: Replace, Move, and Solve. The instructor demonstrates this method through three example problems, explaining how to convert percentages to decimals, perform multiplication, and adjust decimal places to find the solution. The video emphasizes understanding the process and provides step-by-step guidance for each example.

What mnemonic device is introduced to solve percent of a number problems?

• Replace, Move, Solve

• Add, Subtract, Multiply

• Divide, Multiply, Add

• Calculate, Estimate, Solve

In the 'Replace' step, what does the percent symbol get converted into?

• Whole number

• Fraction

• Percentage

• Decimal

During the 'Move' step, how many places do you shift the decimal point?

• One place to the right

• Two places to the left

• Three places to the right

• Four places to the left

What is the result of multiplying 130 by 0.52?

• 67.6

• 69.6

• 68.6

• 70.6

In the example problem, what is the first step after replacing the percent and 'of'?

• Divide the numbers

• Add the numbers

• Multiply the numbers

• Move the decimal point

What is the final result of 30.34 times 62 after moving the decimal?

• 1880.08

• 1881.08

• 1883.08

• 1882.08

What is the first step in solving 1.25% of 14?

• Multiply 1.25 by 14

• Replace 1.25% with a decimal

• Add 1.25 and 14

• Divide 14 by 1.25

After moving the decimal, what is the result of 1.25 times 14?

• 20.5

• 19.5

• 18.5

• 17.5

What is the purpose of the 'Solve' step in the mnemonic device?

• To add the numbers

• To find the final answer

• To divide the numbers

• To estimate the result

What should you remember to do after solving a percent problem?

• Check your work

• Round the result

• Estimate the answer

• Replace, Move, Solve