Solve: Adding Negative 0.85 and Positive 2.25 in Decimal Operations

(−0.85)+(+2.25)= (-0.85)+(+2.25)= ?

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Step-by-step video solution

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00:00 Solve
00:04 Find the point (-0.85) on the axis
00:08 To add, we'll move to the right (positive) on the axis
00:17 We'll use the commutative law and arrange the exercise
00:22 We'll use long subtraction for calculation
00:38 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

(−0.85)+(+2.25)= (-0.85)+(+2.25)= ?

2

Step-by-step solution

First, locate -0.85 on the number line and note that we are moving 2.25 steps to the right:

-0.85-0.85-0.85000+2.25

Then use the commutative property:

2.25−0.85= 2.25-0.85=

Finally, solve vertically:

2.25−0.85=1.40 2.25\\-0.85\\=1.40

3

Final Answer

1.4 1.4

Practice Quiz

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a is negative number.

b is negative number.

What is the sum of a+b?

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