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Four hundred milligrams is equal to how many grams?

A. 4 g

B. 0.4 g

C. 400,000 g

D. 0.00004 g

Answer Explanation:

we are asked to change 400 mg to g. We use the conversion 1g=1000mg, which we can write as:

So, 400 mg to g becomes

Therefore, the Correct Answer is B.

More Questions on TEAS 7 Math

  • Q #1: The width of a rectangle is 4 inches (in) and the area of the rectangle is 32 in2. Which of the following is the length of the rectangle?

    A. 8 in

    B. 28 in

    C. 36 in

    D. 128 in

    Answer Explanation

    We need to find the length of the rectangle from the given area and width of the rectangle. Let L be length if the rectangle. Then,

    Area of rectangle=Length*width

    Substituting area=32 in2 and w=4 inches

    32=L*4

    32=4L

    Divide both sides by 4

    32/4=4L/4

    8=L

    The length of the rectangle is 8 inches.

  • Q #2: Four hundred milligrams is equal to how many grams?

    A. 4 g

    B. 0.4 g

    C. 400,000 g

    D. 0.00004 g

    Answer Explanation

    we are asked to change 400 mg to g. We use the conversion 1g=1000mg, which we can write as:

    So, 400 mg to g becomes

  • Q #3: Which of the following is 3/8 divided by 5/8?

    A. 10/9

    B. 9/10

    C. 3/5

    D. 5/12

    Answer Explanation

    When dividing fractions, the division sign is changed into multiply sign and the first fraction is multiplied by the inverse of the second fraction.

                                        

    Change division to multiply sign and find invers of 5/8. The inverse of a fraction is inverting the given fraction. The denominator becomes the numerator and the numerator becomes the denominator.