Game: FOUR IN A ROW
Aim: To get four symbols in a row
Method:
Choose a square and click on it. Click on the correct answer to the question in the box that appears. If you are right the square is replaced by a tick. Continue until you have won 4 in a row...
6th grade / Number / Decimals / Scaling decimals / Divide decimals by 10 100 1000
Due to the fact that our number system is base 10, dividing decimal numbers by powers of 10 is relatively simple. The digits of the number move around, and there are maybe zeros to add or remove, but the other digits all stay the same. Remember that when we divide numbers by any number greater than 1 they get smaller so check this once your done.
Let's get our terms straight.
dividend ÷ divisor = quotient
237.4567 ÷ 1000 = 0.2374567
So for the sum 237.4567 ÷ 1000 = 0.2374567,
When the divisor is 10 the quotient is 10x smaller than the dividend. When the divisor is 1000 the quotient is 1000x smaller than the dividend.
Write the number to be divided down. Keep the digital point still and move all the digits of the number to be divided to the right relative to it. If we are dividing by 10, all the digits move 1 place. If we are dividing by 100, all the digits will move 2 spaces, and for dividing by 1000, it is 3 digits.
237.4 ÷ 10 = 23.74
237.4 ÷ 100 = 2.374
237.4 ÷ 1000 = 0.2374
Another way of thinking about it is to keep the number static and move the decimal point - when the divisor is 1000 by three places to the left, one for each of the zeros in 1000.
Dividing by 10 is the same as multiplying by the inverse of 10 which is 1/10 or 0.1, and dividing by 100 is the same as multiplying by it's inverse 1/100 or 0.01.
With our Four in a row math game you will be practicing the topic "Divide decimals by 10 100 1000" from 6th grade / Number / Decimals / Decimals. The math in this game consists of 16 questions that ask you to divide by powers of 10 up to 1000 by moving the digits the correct number of columns to the right.
The game will reinforce the math you have chosen to learn by getting you to match the question to the correct answer.
Notes
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
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