Question 6- Math

 ATI TEAS 7 Math Diagnostic (38 Questions)

Question 6 of 38

Solve

1310+258

• 349
• 3316
• 33740
• 4340

End Quiz

Answer Explanation

Correct

Adding two mixed numbers we can add the whole parts and then the fractional parts.

1310+258=(1+2)+(310+58)

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Step 1: Add the Whole parts Together

1+2=3

Step 2: Find the Least Common Multiple of the denominators
Since 10 and 8 are the denominators of the fractions, we will find the LCM of 10 and 8.

Factors of:
10: 10, 20, 30, 40, 50
8: 8, 16, 24, 32, 40

The least common multiple of 10 and 8 is 40.

 

Step 3: Create equivalent fractions using the LCM as the new denominator
Each fraction will now have a denominator of 40.

Let’s start with 310. Since 10×4=40, we have to multiply the numerator by the same number.

310=3×410×4=1240

Let’s create an equivalent fraction for 58 with 40 as the new denominator.