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# Adding & subtracting decimals word problem

Let's get fancy and practice adding and subtracting decimals in the same word problem. Created by Sal Khan and Monterey Institute for Technology and Education.

## Want to join the conversation?

• Couldn't you add 875.50 +(-300) and then add that to the account?? Or am I missing something?
• You could but that would enter BODMAS an entirely different area.
• At , why do people use word problems any way?
• Because it usually makes it more realistic and for some people it is easier.
• hey guys quandale dingle here my goofy ahh uncle is holding me captive AAAH My friend barnacle jones junior was hit with a rhinoceros horn because he was listening to no maidens
• Rehehehehe
(1 vote)
• Well, he would have just simply subtracted 300\$ from \$5397.58 in his mind as he does for simple calculations. He used 54 seconds extra for the subtracting method. The answer was same from either ways. I really care about time and try not to waste one second of mine.
• Then you can just fast forward, that's what I do, and if I feel I missed something I go back.
• my one and only question is ,is this the same thing as organizing decimals?(:
• Can you help me I don't understand math. it is confusing. please help me with the question
1232.234 x 43.54 + 3454.76 = ?
Thanks that would be great.
• First, we have to do order of operations. We do the multiplication part first, and then add the product to 3454.76. To do large multiplication problems such as this, all we have to do is multiply each digit in one number by the other number, and then add up the products. Let's multiply each digit in 43.54 by 1232.234.
0.04 * 1232.234 = 49.28936
0.5 * 1232.234 = 616.117
3.00 * 1232.234 = 3696.702
40.00 * 1232.234 = 49289.36
Adding up all of these products, we get 53,651.46836. Now to do the second step of the problem, we add this product to 3454.76. To to this, we simply add up all of the place values, and aggregate the result.
0.00006 + 0.00000 = 0.00006
0.0003 + 0.0000 = 0.003
0.008 + 0.000 = 0.008
0.06 + 0.06 = 0.12
0.4 + 0.7 = 1.1
1.0 + 4.0 = 5.0
50 + 50 = 100
600 + 400 = 1000
3000 + 3000 = 6000
50000 + 00000 = 50000
After we add up all of these values together, we get a final answer of 57, 106.2284. Hope this helped!
• I am God
• no .
(1 vote)
• Namita travels 20km50m every day. Out of this she travels 10km200m by bus and the rest by auto. How much distance does she travel by auto?
• Every day, she travels by bus and by auto which means 20km50m is the total distance. You know 10km200m is traveled by bus and the rest by auto which means this is a subtraction word problem.

1. You could do the subtraction in steps.
- First subtract 50m to get to 20km
- Then subtract 9km to get to 11km
- Finally subtract 800m to get to 10km200m
- Add all of the values you have subtracted to find the distance traveled by auto (9km + 800m + 50m = 9km 850m)

OR

2. You could convert the units to km before doing the subtraction.
- Convert the metres to kilometres so that 20km50m = 20.05km and 10km200m = 10.2km.

Therefore:
Distance traveled by auto = 20km50m - 10km200m
Distance traveled by auto = 20.05km - 10.2km

You should find that this gives you an answer of 9.85km which is the same as 9km 850m.

Hope this helps!