First thing first. My taste buds need a filling. I ventured out and found a very nice restaurant that was open 24 hours, 24/7 we call it. An omelet with home fries, juice and coffee sound good. The cost was $9.18, which included tax. What tip should I leave? I read that anywhere between 15% and 20% is appropriate. Eighteen percent is sometimes added directly to the bill so there is no thinking involved. Since 18% is close to 20% let’s use that number to calculate the tip. Ten percent of $9.18 is 91.8¢ and double that is $1.836. So let’s see, $9.18 plus $1.83 equals $11.01. Leave $11 and walk away. Now when the numbers get larger, it is so much easier.
Fantastic title for Day 14! Can we fathom all those binomial squares and cubes? First, one needs to know perfect square numerals. Here’s some help: 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100 are the first ten numbers squared. These squares are numbers to know. Then the cubes 1, 8, 27, 64, 125, 216, 343, 512, 729, and 1000 are the first ten cubes. Wow! When you have memorized the above facts, we can proceed on our road trip. Don’t be too long, cause practice makes perfect.
1. What is 5% of $22.60?
2. 110% of 450 is what number?
3. What percent of 300 is 3.6?
4. 50 is 20% of what number?
5. 4.5% of what number is 13.5
Answers to the above 5 questions are:
a) $1.13, b) 495, c) 1.2%, d) x=250, e) 300.
Fundamentals of Math Book 1
This pre-algebra workbook will give all middle and junior high school students the opportunity to review the basic and necessary mathematical skills that are prerequisites for Algebra I.
Seventy-one lessons are devoted to basic operational skills of addition, subtraction, multiplication and division for whole numbers, fractions and percents. Exponents, greatest common factors, least common multiples, ratio and proportions are thoroughly discussed. Story problems such as distance-rate-time, fractional parts and percents are focal points of our review. Working with signed numbers, algebraic addition, order of operations and simple equations are practiced. Many of these simple equations, which contain fractions and decimals besides whole numbers, give the pre-algebra student that extra push needed to begin Algebra I positively. This consumable workbook culminates with distributive property problems, PEMDAS (parenthesis, exponents, multiply, divide, addition, subtraction) examples alongside signed numbers and two-step equations. Answers are provided for each practice problem along with numerous examples of every basic mathematical concept discussed throughout this workbook. Enjoy with workbook preparing for your next mathematical step.
1. Karl bought a pair of slacks for $33.25 and a shirt for $13.73. What was the total cost of these items?
a. $46.98 b. 47.98 c. $47.88 d. $47.48
2. Cayla bought a skirt for $41.12 and a blouse for $12.52. What was the total cost of these items.
a. $52.64 b. $53.64 c. $54.15 d. $52.54
3. What number is twenty-seven less than seventy-nine?
Answers to the above 3 questions are:
1) a. 2) b. 3). 52
Fundamentals of Math Part 2
Algebra 1 Sequel: 2nd Edition
(40) Sally bought 6 pens for $14.04. Each pen cost her how much? $ 2.34.
(45) What is the 5% sales tax on a $122 radio? $ 6.10
(52) Solve for x: x – 32 = 78