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SAT Math 17: Ratios, Rates, Proportions, & Units

Автор: Unique Prep

Загружено: 2021-01-22

Просмотров: 23641

Описание:

NOTE: All info in this video applies to the DIGITAL SAT, but there are some points to keep in mind. Calculators are now allowed on ALL math questions (a Desmos calculator is built in to the testing app) and the “grid ins” (self-produced response questions) now allow for a wider range of answers (up to 5 digits, negative numbers, etc). Regarding calculator use, we recommend students continue to attempt the “no calculator” questions in our manual without a calculator, but if they feel they must use one, they certainly can. As for the grid-ins, those in our manual abide by the paper test rules, not the DSAT ones.

CONTENTS:
00:00 - Introduction
00:45 - 17.1 Recognizing ratios, rates, props...
02:47 - 17.2 Proportions
03:29 - Setting up & solving basic proportions
07:40 - SM.256
07:43 - Example 1
10:08 - Scale models/drawings
10:19 - Example 2
12:26 - Translating "directly proportional"
15:50 - Example 3
17:42 - SM.257
17:49 - Graphing a direct proportion
18:59 - 17.3 Ratios
19:28 - Expressing ratios
20:22 - Example 4
30:15 - SM.258
30:29 - 17.4 Unit conversions
31:39 - Example 6
33:57 - Using conversion factors & cancellation
35:14 - Example 7
40:22 - SM.259
40:30 - Example 8
46:10 - Example 9
49:18 - Example 10
52:21 - SM.260
52:24 - Conversions with square or cubic units
53:15 - Example 11
58:40 - Example 12
1:01:07 - SM.261
1:01:18 - 17.5 Rate statements with per/for each
1:01:55 - Example 13
1:06:08 - Example 14
1:09:26 - SM.262
1:09:33 - 17.6 Work questions
1:12:04 - Example 15

SAT Math 17: Ratios, Rates, Proportions, & Units

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