Q: How do you know whether you should add or subtract the value of the two numbers?

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explain why it is important to line up decimal numbers by their place value when you add or subtract them

Compatible Numbers are numbers that are close in value to the actual numbers and easy to add, subtract, multiply or divide mentally

add the three numbers the subtract 180 from your sum

Subtract the absolute value of the smaller number from the absolute value of the larger number. The answer will have the sign of the larger numbers.

It is the same reason that when adding whole numbers, they are all aligned to the right. It is so that columns of numbers are aligned according to their place value.

Fnd the lowest value and subtract it from the highest value.

This is true for adding and subtracting ALL numbers, not just decimal representations.

Rules: Unlike SignsSubtract the absolute value of the number and copy the sign of the number with greater absolute value.

The range is the distance from the smallest value to the largest value. This is equivalent to the largest value MINUS the smallest value. Therefore you subtract.

-3 +5 = +2 Note: To add numbers with different signs. subtract the numbers then copy the sign of the number with the greater value.

Instead of "a half", write "eight sixteenths". That doesn't change the value of any numbers, but it makes it a lot easier to subtract the three sixteenths from the eight sixteenths.

If you always subtract the smaller value from the larger one, the number that you tell other people lets them know how much the mass changed, but it doesn't tell them whether the mass increased or decreased as time passed.

Compatible numbers are numbers that are close in value to the actual numbers and easy to add, subtract, multiply, or divide mentally.So a logical compatible number for 77 would be 80.

value means an amount of how much items you have,whether it is numbers,pets,food,etc.

This difference is called the range. Subtract the smallest value (S) from the largest value (L).Formula: L - S = Difference

As an example, 13579 the number 5 is in the hundreds place and has the value of 500. It does not matter whether the numbers are odd or even.

Step 1: Take the old value and subtract it from the new value, then divide by the old value. Step 2: Multiply by 100. That number represents the percent change.

The conclusion is easy. Take your numbers 68 and 126, and subtract. 126 - 68 equals 58, so 58 is the value of x.

If the integers have the same sign (poitive or negative) you should add them together. If they have a different sign you subtract the numbers and the answer will take the sign of the number with the greatest absolute value (the number farthest from zero on a numberline) in the problem.

Understanding place value helps me to subtract across zeros by putting a \ on it

Subtract the smaller distance from the larger one.

Not sure about the range value and whether or not it can be rounded to 200 depends on the degree to which the numbers are being rounded.

The middle or mid value is easy to find....it is what it sounds like. If you have a group of numbers, you identify the largest and smallest, and then calculate the halfway point (largest # - smallest #). Then, from your group of numbers, identify the number closest to the number you came up with. If you are seeking a mid value from only two numbers, just subtract the smaller from the larger number and that's your answer.

You use the minus sign. All formulas begin with an equals and most values are entered in cells, which can then be used in formulas. So if you want to subtract the value in cell A3 from the value in cell A1, then in a cell other than A1 or A3 you would put:=A1-A3

It is important to add and subtract integers: to get a new integer value in mathematics .