Middle School Math, WarmUp #3
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Your answer
Various Calculations
What is the easiest way to multiply by 10, 100, ...?
1 point
Just append the number of zeros in 10, 100, ... to the number you are multiplying
Add the number you are multiplying to itself 10, 100, ... times.
Clear selection
The decimal number 12.56 is multiplied by 100. Select the statement that is true.
1 point
The decimal point moves 2 zeroes to the left.
The decimal point moves 3 zeroes to the left.
The decimal point moves 2 zeroes to the right.
The decimal point moves 3 zeroes to the right.
The decimal point does not move.
Clear selection
The decimal number 12.56 is divided by 100. Select the statement that is true.
1 point
The decimal point moves 2 zeroes to the left.
The decimal point moves 3 zeroes to the left.
The decimal point moves 2 zeroes to the right.
The decimal point moves 3 zeroes to the right.
The decimal point does not move.
Clear selection
What is the best way to multiply 80x90
1 point
Multiply in a traditional way by lining up the number one underneath the other and perform the operation.
First multiply the numbers 8x9=72 without the zeros, then "multiply the tens as zeroes": 0 x 0 = 00, next put it all together as 7200.
Clear selection
The expression 7.08 ÷ 100 is given. The result of the division is
1 point
708
7.08
70.8
0.708
0.0708
Clear selection
When it comes to Division, what is a Remainder?
1 point
It's a number that has to be remembered.
It is the leftover from a division that could not divide into whole parts only.
It is a leftover that has to be remembered from another division.
Clear selection
The expression 61 ÷ 14 is given. Check all statements that are true.
1 point
14 is the remainder
61 is the remainder
14 is the divisor
61 is the divisor
61 is the divided
the number of times the divisor fits into the dividend precisely is called a quotient
whatever is leftover after the quotient fits precisely into the dividend is called the remainder
the result of the division is called divisibility
61 is the quotient
14 is the quotient
Does the following diagram depict the 61 ÷ 14 division correctly?
1 point
Yes
No
Clear selection
What is the remainder of this division?
1 point
Your answer
Which of the following relationships are correct based on the given diagram? Check all that apply.
1 point
14 = 61 ÷ 5 + 4
61 = 14 * 4 + 5
5 * 56 = 61 * 4
14 * 61  4 * 5 = 0
What is the quotient and the remainder of the 46 ÷ 11 division?
2 points
4
2
46
11
quotient
remainder
4
2
46
11
quotient
remainder
What is the quotient and the remainder of the 39 ÷ 10 division?
2 points
39
10
9
3
quotient
remainder
39
10
9
3
quotient
remainder
Operations that move the decimal point to the right make the number
1 point
larger
smaller
Clear selection
Operations that move the decimal point to the left make the number
1 point
larger
smaller
Clear selection
Adding 2 trailing zeros to the rightmost position of a decimal number, for example 5.708 has the following effect
1 point
makes the number larger
makes the number smaller
has no effect
Clear selection
Adding 2 trailing zeros to the leftmost position of a decimal number, for example 5.708 has the following effect (check all that apply)
1 point
makes the number larger
makes the number smaller
has no effect
it is avoided by convention, since the only number that usually starts with zero is zero.
Inserting 2 zeros immediately to the right side of the decimal point of 5.708 has the following effect
1 point
makes the number larger
makes the number smaller
has no effect
Inserting 2 zeros immediately to the left side of the decimal point of 5.708 has the following effect
1 point
makes the number larger
makes the number smaller
has no effect
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