TAILIEUCHUNG - Success step english 9

Tham khảo tài liệu 'success step english 9', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CBEST MINI-COURSE HOT TIP Don t try to keep a formula in your head as you solve the problem. Although writing does take time and effort jotting down a formula is well worth it for three reasons 1 A formula on paper will clear your head to work with the numbers 2 You will have a visual image of the formula you can refer to and plug numbers into 3 The formula will help you see exactly what operations you will need to perform to solve the problem. L Stands for Live Living the problem means pretending you re actually in the situation described in the word problem. To do this effectively make up details concerning the events and the people in the problem as if you were part of the picture. This process can be done as you are reading the problem and should take only a few seconds. V Stands for View View the problem with different numbers while keeping the relationships between the numbers the same. Use the simplest numbers you can think of. If a problem asked how long it would take a rocket to go 1 300 000 miles at 650 MPH change the numbers to 300 miles at 30 MPH. Solve the simple problem and then solve the problem with the larger numbers the same way. E Stands for Eliminate Eliminate answers you know are wrong. You may also spend a short time checking your answer if there is time. Sample Question Solve this problem using the SOLVE steps described above. 1. There are 651 children in a school. The ratio of boys to girls is 4 3. How many boys are there in the school a. 40 b. 325 c. 372 d. 400 e. 468 Answer 1. Subject Experience You know that 4 and 3 are only one apart and 4 is more. You can conclude from this that boys are a little over half the school population. Following up on that you can cut 651 in half and eliminate any answers that are under half. Furthermore since there are three numbers in the problem and two are paired in a ratio you can conclude that this is a ratio problem. Then you can think about what methods you used for ratio problems in the past. 2. .

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