MULTIPLE
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3rd grade / Measurements / Calculate / Subtract grams from kilograms
To subtract weights given in grams from weights given in kilograms, you first need to convert the kilograms to grams. This is because kilograms and grams are different units of mass, and you cannot directly subtract them without first converting them to the same unit. Here's how to do it:
Convert kilograms to grams: As there are 1,000 grams in a kilogram, you need to multiply the number of kilograms by 1,000 to convert it to grams.
For example, let's say you have 4 kilograms and you want to subtract 350 grams from it. To convert the 4 kilograms to grams, you would multiply by 1,000:
4 kilograms x 1,000 = 4,000 grams
Subtract the given weight in grams from the converted weight in grams:
4,000 grams - 350 grams = 3,650 grams
So, the resulting weight after subtracting 350 grams from 4 kilograms is 3,650 grams.
Another example, subtract 900 grams from 1.3 kilograms.
Converting the kilograms to grams we have 1.3 kg x 1,000 = 1300 g.
Subtracting the 900 grams we have 1,300 g - 900 g = 400 g.
So, the final weight after subtracting 900 grams from 1.3 kilograms is 400 grams.
This topic asks you to subtract a given number of grams from a weight given in kilograms. You do so by first converting the kilograms to grams. Your answers should be in grams.
With our quick math tests you will be revising "Subtract grams from kilograms" in 2 simple steps. The math in our tests consists of 16 questions that ask you to subtract masses by converting the given kilograms to grams and then subtracting the weights.
These math tests are designed to round off your learning experience here at Free Math Games by testing whether you can correctly recognize the math you have learned (in the multiple choice test) and that you can correctly enter the correct answers (in the writing test).
Make sure you have chosen the correct topic before starting! Although these tests are timed, try to relax and concentrate on getting the answers right at first - later you can try the tests again more quickly.
The two types of tests are:
Key features of our math tests include:
You should expect to score 8+ / 10 in each test before you select a new topic. It is a good idea to repeat the test for each topic you do after two weeks to "reinforce" the math for that topic
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This is a multiple choice activity similar to "What is it" in the Math lessons - you are shown a randomly selected question from the topic you are using. A selection of topic answers are displayed as a list. If you click/tap the speaker beside any answer you will hear the audio for that answer.
For each question, you must click on the answer that matches that question. If your answer is correct you will hear a bell and one star will be lit. The next question will be shown. If your answer is wrong, a box will open showing you what the correct answer was.
The test is timed, and the clock starts when you click the Start button. The clock stops when you click your final answer. At the end of your test a screen will tell you how many of the questions you got right and how long you took to complete the test.
The writing test checks whether you can type the correct answer using your keyboard. This test is also timed. You can do the test many times until you get a good score. To start the test, click on the "Writing test" sign in the navigation board, then click on the "Start the test" arrow.
A random problem from your selected topic is shown. Beneath the problem there is a white box into which you should type the answer. If you need a little help you can click on the "Help me" button for a tip. Only use the help if you really need to.
If you type the answer correctly your device will automatically light a star. If you have entered your answer and no star lights up, click on the tick or press Enter to check your answer. When you have tried all the questions, a screen will show you how many questions you answered correctly and how long it took.
* Try to score 8 out of 10 in both test before you choose a new topic *
* It is OK to do the tests many times if you need to *
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