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Dafna11 [192]
3 years ago
6

Take apart the number to make a 10. Then subtract.

Mathematics
1 answer:
Licemer1 [7]3 years ago
4 0

Answer:

This is one of a variety of "subtraction solutions"--basically a different way to subtract by breaking numbers down into 10-digit chunks.  It's not especially helpful for small subtraction problems, but as math gets more complicated, this method will come in handy.

Step-by-step explanation:

Here's an example: Jim had a bag of 15 jelly beans.  He eats 8.  How many jelly beans does he have left?  <u>Take apart the number to make a 10. Then subtract.</u>

Here, you need to "take apart" the 8 to make your 15 jelly beans 10, then you subtract the remainder of 8 to get your solution.  In other words,

 --"take apart" 8 into 5 and 3 (because you're going to need a 5 to make 15 into 10).  15 minus 5 equals 10.  HOORAY!  You have your 10.  Now, subtract the remaining 3.  10 minus 3 equals 7.  Huzzah--your final answer!

On paper, the problem looks like this:

<u>15 - 8 (</u><u>5, 3</u><u>) = ?</u>

15 - 5 = 10

10 - 3 = 7

So...15 - 8 = 7

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Chuck bought 19 movie tickets for $174.50.
kap26 [50]

Answer:

45

Step-by-step explanation:

5 0
3 years ago
Two cars are traveling on two different routes, one 43 miles longer than the other. The car traveling on the longer route travel
Anestetic [448]

Answer:

x1 = 275 miles (shorter)

x2 = 318 miles (longer)

Step-by-step explanation:

Let

x1 = be the shorter route

v1 = speed of the car in the shorter route

t1 = time it took to cover shorter route

x2 = the longer route

v2 = speed of the car in the longer route

t2 = time it took to cover longer route


x1 + 43 = x2   (1)

v2 = v1 -2   (2)


v2 = x2/t2 = x2/6

v1 = x1/t1 = x1/5


This means that

v2 = v1 -2   =>

x2/6 = x1/5 -2

The system of equations results

a.   x1 -x2 = -43

b.  x1/5 - x2/6 = 2

Solving this system of equations, we find that

x1 = 275 miles

x2 = 318 miles


4 0
3 years ago
Read 2 more answers
Which situation below would represent a negative rate of change:
uranmaximum [27]

Answer: John's situation

Step-by-step explanation:

Hi, to answer this question we have to write an equation for each situation.

John’s situation:

The amount of money that John has (y) is equal to his school account (40) minus the product of the number of days (x) and the amount he spends per day( 3)

y =40-3x

As days pass by, John has less money (negative rate of change)

Judy's situation

The amount of money that Judy has in her savings account (y) is equal to the product of the number of days (x) and the amount he saves per day (20/2)

y = x (20/2)

3 0
3 years ago
Please give the the answer and dont send a file
Dahasolnce [82]

Answer:

-117

Step-by-step explanation:

x = 106 x 4 - (99+120+103+111+108)

x = 424 - 541

x = -117

Hope that helps!

7 0
3 years ago
Find the 76th term of the arithmetic sequences 16 14 12
grigory [225]

Answer:

a₇₆ = - 134

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 16 and d = a₂ - a₁ = 14 - 16 = - 2, then

a₇₆ = 16 + (75 × - 2) = 16 - 150 = - 134

7 0
3 years ago
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