# math strategy #2: backsolving start with the answers and plug them into the problem to find the...

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Post on 11-Jan-2016

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Math Strategy #2: Backsolving

Problem:A music club draws 27 patrons. If there are 7 more musicians than singers in the club, how many patrons are musicians?a) 8b) 10c) 14d) 17e) 20

Math Strategy #2: Backsolving

Problem:If a + b + c = 110, a = 4b, and 3a = 2c, then b = a) 6b) 8c) 9d) 10e) 14

Strategy Mini-Quiz

Straight from the Formula Reference Sheet

Pythagorean Theorem

Given a right triangle with a hypotenuse of length 15 and a leg of length 9, find the length of the second leg.

Pythagorean Triples

MEMORIZE THEM, KNOW THEM, LOVE THEM

What’s the Length of the Missing Side?

What’s the Length of the Missing Side?

What’s the Length of the Missing Side?

What’s the Length of the Missing Side?

What’s the Length of the Missing Side?

What’s the Length of the Missing Side?

5-115-18

The Distance Formula

Special Right Triangleshttp://cdn.kutasoftware.com/Worksheets/Geo/8-Special%20Right%20Triangles.pdf

45-45-90 30-60-90

Special Right Triangles

30-60-90’s are cut out from an equilateral triangle

Work Time

1) Simple Assignment (not due)2) Complex Assignment (due Monday)

Topic #2: Numerical Reasoning

Strategy 1: Picking Numbers

Problem:If a is an odd integer and b is an even integer, which of the following must be odd?a) 2a+bb) a+2bc) abd) a2be) ab2

Strategy 1: Picking Numbers

Problem:From 1985 to 1990, the berry production of bush x increased by 20 percent. From 1990 to 1995, the berry production increased by 30 percent. What was the percent increase in the berry production on the bush over the entire ten-year period from 1985 to 1995?a) 10%b) 25%c) 50%d) 56%e) 60%

Strategy 1: Picking Numbers

Problem:If n sunglass lenses cost p dollars, then how many dollars would q sunglass lenses cost?a) nq/qb) nq/pc) pq/nd) n/pqe) p/nq

Strategy Practice20 minutes

Resources

1) Mastering the SAT (on my DP)2) Math Vocabulary Sheet (on my DP)3) Facts and Formulas Sheet (on my DP)4) ProProfs Tracker (live and in person!)