1. 
Countinue
For starters, you can automatically get rid of Choice (1) - you can't simply add the quantities under the radical signs when adding square roots, which is exactly what Choice (1) does. There are two approaches to the correct answer here. One is to pull the squares out from under the radical signs, like so:
Now that you have the same number under the radical signs, you can finally add them:
, making Choice (4) correct.
Another valid approach is to guesstimate the value, like so:
Now that you have your guesstimate, go to the answer choices and make guesstimates for each of those values. You'll see that only Choice (4) makes sense.
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Test Prep Lessons With Video Lessons and Explained MCQ
Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.
Each exam has different types of math sections. The sections may be called Mathematics or Arithmetic Problem Solving. In the math section of the exam, you will be tested on basic math skills such as addition, subtraction, multiplication, and division. Some sections may include fractions, decimals, graphs and percentages. All questions will be a multiple choice format. The amount of math questions on each test will vary.