What Times What Equals 28

iv and vii are factors of 28.
You lot might be thinking that at that place are other means to multiply and make 28. You are right!

You lot could also multiply 2 x 14 or 1 x 28. These are all factors of 28.

Let's list out the factors of 28: i, 2, 4, 7, 14, 28. Each of the numbers in this listing are cistron pairs.

Nosotros tin move from the outsides to the center and pair the numbers together to make sets of numbers that volition multiply to make 28.

Accept a look at another example:

List all the factors of lx .

Whenever nosotros are asked to listing out all of the factors, we can use these factor pairs to help brand sure that we have not missed any. We will outset on the exterior and piece of work our fashion in.

The first pair is 1 and 60.

Next, we volition carve up threescore by 2 because 60 is fifty-fifty. Then the second pair is 2 and thirty.

From here, we tin continue to try the side by side number upward in social club. So the third pair is 3 and 20.

Now nosotros volition utilize 4 and xv.

threescore ends in a nada, so we can use 5 and 12.

Then we will add half-dozen and 10.

At present, in between 6 and 10 is 7, viii and 9. One time we accept checked if whatsoever of these three numbers will go into lx, we know that we have found all of the factors of 60. None of them will split up evenly into 60. Therefore nosotros accept all of the factors of 60 listed above.

Factors are important because they help us solve bug. Factors tin can help us exist able to break things into groups.

Example: There are 24 people in a room together at a party. Everyone would like to take part in games during the party. What size groups can we break the people into then that no one is left out and everyone can play?

To solve this problem, nosotros need to know the factors of 24.

Listing them out: 1, 2, 3, iv, vi, eight, 12, 24

Let's encounter how the factor pairs can help u.s.a..

-The start pair, 1 and 24, doesn't tell usa much. Information technology just ways that nosotros could accept 1 group of 24.
-The 2d pair tells usa we could take ii groups of 12 or 12 groups of 2.
-The third pair tells us we could have 3 groups of 8 or 8 groups of 3.
-The 4th pair tells us we could have 4 groups of 6 or 6 groups of 4. Now we can see that there are several possibilities for grouping the party guests.

Let'due south check out a more than geometrical example.

Instance: Xin has a plot of land with an area of 36ft2. He wants to pause his plot of land into different equal sized sections to plant different vegetables. How many vegetables can he plant?

Once again, we will start past listing out the factors of 36: 1, 2, three, 4, half-dozen, 9, 12, 18, 36

Allow's over again see how the factor pairs can help us.
The first pair, ane and 36, doesn't tell united states of america much. It just means that we could accept 1 vegetable taking up all of the land or 36 vegetables taking upwards 1 foursquare pes.
The 2d pair tells united states of america nosotros could accept 2 veggies using 18 foursquare feet each or 18 veggies using 2 square feet each.

The third pair tells us nosotros could have 3 veggie using 12 square feet each or 12 veggies using 3 square feet each.
The fourth pair tells us nosotros could accept 4 veggies using nine foursquare feet each or 9 veggies using 4 foursquare feet each.
The terminal pair tells u.s. that we could have 6 veggies that each take upward 6 foursquare feet.

Each of these are possible solutions. And now Xin tin can decide how many plants to go.

Let'due south Review:

Factors are numbers that can be multiplied together to make another number. So 3 and 7 are factors of 21.

We tin use factors to help the states solve issues that ask the states to break something into equal groups or equal sized sections.

What Times What Equals 28,

Source: https://www.softschools.com/math/topics/factors/

Posted by: rosastichich.blogspot.com

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