Game: MIX AND MATCH
Aim: Drag question blocks to answer boxes
Method:
Drag the question block over the right answer box to tidy up the play room. Points are added and taken away automatically.
Click the answer boxes to hear the answer for each box. You must answer 5 questions correctly to complete the game
4th grade / Decimals / Add decimals / Complements of number one
Decimal complements refer to the process of finding the complement of a decimal number with respect to a target number. In this topic, complements to 1, complement means the value that, when added to the given decimal number, will result in a sum of 1.
To find the decimal complement to 1, you can follow these steps:
For example, let's say we want to find the decimal complement to 1 of the number 0.75.
1 - 0.75 = 0.25
So, the decimal complement to 1 of 0.75 is 0.25.
Another example: Let's find the decimal complement to 1 of the number 0.412.
This is not as easy as the first example because the subtraction is harder:
1 - 0.412
Of course you can use a calculator to do this, but as mental arithmetic, the easiest way is to think of the digits after the point as a separate value, in this case 412. Because there are 3 digits, we subtract it from 1000, so we get 1000 - 412 = 588
Putting the decimal point back in, we can say:
1 - 0.412 = 0.588
So, the decimal complement to 1 of 0.412 is 0.588
With our Mix and match math game you will be practicing the topic "Complements of number one" from 4th grade / Decimals / Add decimals. The math in this game consists of 16 questions that ask you to identify the missing decimal complement to 1.
In this game we are in a room with lots of toys - and the room needs clearing up - you need to put the play blocks back in the right boxes to tidy the room and win the game...but which is the right box for each block? Well, you can work that out by comparing the question on the block with the math answer on each of the boxes - you should drag the question block into the box whose math answer matches the picture question.
You can listen to the spoken math answer by clicking on the individual boxes. There are 5 blocks to clear up - but if you put them in the wrong boxes, there will be more... Anyway, tidy is good and practicing math is better so start now and see how you get on...
This game reinforces the math you learned or revised in the lesson by asking you to match each question to the correct answer. If you are older you may not like the childish reference to toys, but don't worry - there are other games to play, and who knows - you might like a trip down memory lane?
UXO * Duck shoot * The frog flies * Pong * Cat and mouse * The beetle and the bee
Rock fall * Four in a row * Sow grow * Choose or lose * Mix and match
There are 5 blocks that need putting away to tidy the play room. Drag (they are heavy...) the blocks to the correct boxes.
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