EDM G4 Math Boxes 5-1

Karen is typing a 4,000-word essay. She can type about 30 words per minute. If she types for 45 minutes on Monday and 55 minutes on Tuesday, about how many words will she still have to type to finish her essay?

• About 1,000 words

• About 1,500 words

• About 2,000 words

• About 2,500 words

Answer explanation

Karen types 30 words/min. In 45 min on Monday, she types 1350 words, and in 55 min on Tuesday, she types 1650 words. Total typed: 3000 words. Remaining: 4000 - 3000 = 1000 words. Thus, she still has about 1,000 words to type.

Tags

CCSS.4.MD.A.2

a. 2/4 = ?

• 4/8

• 6/8

• 8/8

• 2/8

Answer explanation

To simplify 2/4, we can multiply both the numerator and denominator by 2, resulting in 4/8. Thus, 4/8 is equivalent to 2/4, making it the correct answer.

Tags

CCSS.4.NF.A.1

Answer explanation

To simplify \( \frac{4}{6} \), divide both the numerator and denominator by 2, resulting in \( \frac{2}{3} \). To find an equivalent fraction with a denominator of 12, multiply both by 4, giving \( \frac{8}{12} \), which is the correct answer.

Tags

CCSS.4.NF.A.1

Answer explanation

To compare \(\frac{2}{3}\) and \(\frac{3}{6}\), we can simplify \(\frac{3}{6}\) to \(\frac{1}{2}\). Since \(\frac{2}{3} \approx 0.67\) and \(\frac{1}{2} = 0.5\), it is clear that \(\frac{2}{3}\) is greater.

Tags

CCSS.4.NF.A.2

Ming’s science beaker contains 2 liters of water. For the experiment, Kelly added 26 milliliters of liquid coloring and Ryan added another 145 milliliters of liquid soap. How many milliliters of liquid are in Ming’s beaker now?

• 2,171 milliliters

• 1,829 milliliters

• 173 milliliters

• 371 milliliters

• 271 milliliters

Answer explanation

Ming's beaker has 2 liters of water, which is 2000 milliliters. Adding 26 milliliters of coloring and 145 milliliters of soap gives a total of 2000 + 26 + 145 = 2171 milliliters. Thus, the correct answer is 2,171 milliliters.

Tags

CCSS.4.MD.A.2

CCSS.4.MD.A.1

Ms. Simpson's class is going on a field trip.  There are 3 vans that will carry 8 students and 1 adult.  There are 5 cars that will each carry 4 students and 1 adult.  How many people are going on the field trip?
Is this a multi-step or single step word problem?

• Multi-step

• Single Step

Answer explanation

This problem requires calculating the total number of people in both vans and cars. First, find the total from the vans (3 vans x 9 people) and then from the cars (5 cars x 5 people), making it a multi-step problem.

Tags

CCSS.4.OA.A.3

Ms. Simpson's class is going on a field trip.  There are 3 vans that will carry 8 students and 1 adult.  There are 5 cars that will each carry 4 students and 1 adult.  How many people are going on the field trip?
Is this a multi-step or single step word problem?

• Multi-step

• Single Step

Answer explanation

This problem requires multiple calculations: first, to find the total number of people in the vans and then in the cars, and finally to sum them up. Therefore, it is a multi-step word problem.

Tags

CCSS.4.OA.A.3