Roger swam 19 laps in the pool. Anna Maria swam 4 times as many laps as Roger. How many laps did Anna Maria swim?

Answer 1

Question:

Roger swam 19 laps in the pool. Anna Maria swam 4 times as many laps as Roger. How many laps did Anna Maria swim?

Step 1: Evaluate the word problem and list the important facts:

1. We start with the number of laps Roger swam, which is given as 19 laps.
2. According to the problem, Anna Maria swam 4 times as many laps as Roger.

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Step 2:

To find the number of laps Anna Maria swam, we need to multiply the number of laps Roger swam by 4.

We can set up the equation as follows: Laps Anna Maria swam = 4 × laps Roger swam.

Now we perform the multiplication: 4×19 = 76

Anna Maria swam 76 laps.

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Solution:

Summary: Roger swam 19 laps, and Anna Maria swam 4 times that amount, leading us to calculate that

Anna Maria swam 76 laps in total.

I hope the mathematical calculations (step by step approach) was helpful. Please let me know if you require any more assistance. If anyone in my neighborhood is interested in setting up an in-person math tutoring session. I look forward to hearing from them. Have an amazing day. Doris H.

Answer 2

When solving word problems, it is important to notice any key words which can tell us what operation to use to solve the problem. In this case, I see the word "times", which tells me that I must solve the problem using multiplication. Since Anna Maria swam 4 times as many laps as Roger, I will do 4 times 19 (the number of laps Roger swam) to get 76 laps for Anna Maria.

Answer 3

Hi Henry! I'd be happy to help you out here with this problem! The word "times" in the problem is a keyword that lets the reader know that multiplication is the operation that needs to be used. To solve, we need to multiply 4 by 19. There are a few ways we can do this.

1) We can round 19 up to 20 and then solve using mental math. 4 x 20 = 80. We then need to subtract 4 to remove the little bit that we had used in rounding to get the actual answer. 80 - 4 = 76.

2) We can use the distributive property to break apart the number 19 since that's a larger number. I'm going to break 19 up into 10 and 9, since I find multiples of ten to be simpler for me to multiply by. I'm going to set the problem up as (4 x 10) + (4 x 9). I know that 4 x 10 = 40 and 4 x 9 = 36. I add those two sums together and I get 76!

I hope you find this helpful! 😊

Answer 4

Roger swam 19 laps and Anna Maria swam 4 times as many so she must have swam 4•19 and 4•19 = 76