W10.1
Hello I really don't know how to make questions about calculations with decimals interesting, but it is quite important, so let's do it :)
847.8 - 0.34 = ?
W10.1
Flashcard
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Mathematics
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Vocational training
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Easy
Lenny Coqueriaux
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4 questions
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1.
FLASHCARD QUESTION
Front
W10.1
Hello I really don't know how to make questions about calculations with decimals interesting, but it is quite important, so let's do it :)
847.8 - 0.34 = ?
Back
Hint:
use the column method to do this subtraction.
Align your decimal points!!!
You will need to add a zero at the end of 847.8, it won't change the value but will allow you to take away the 0.34.
2.
FLASHCARD QUESTION
Front
a multiplication:
0.2 x 0.4 = ?
Back
hint:
method 1:
How many numbers do I have after the decimal points? (2)
I do the multiplication without the decimal points. Then I bring the decimal point back in my answer, and put the same number of digits after the decimal point (2).
method 2:
I time my first number by 10 to make it a whole number.
I do the same with the second number.
Finally I need to divide my answer by 10 then 10 again (which is the same as divide by 100)
3.
FLASHCARD QUESTION
Front
and finally a division:
31.2 ÷ 6 = ?
Back
Hint:
Just do a bus stop method. When you reach the decimal point in the dividend (31.2) put a decimal point in the quotient (the result).
To have a sense of 'scale' for your answer, you can estimate the answer by ignoring the decimal 31 ÷ 6 = ..... and know your answer should be marginaly bigger or smaller.
4.
FLASHCARD QUESTION
Front
Answers:
847.8 – 0.34 = 847.46
0.2 x 0.4 = 0.08
31.2 ÷ 6 = 5.02
Back
Well done you :)
another question:
What is the best season to practice adding?
answer: sum-mer!
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