2.8: Proficiency Exam
Exercise \(\PageIndex{1}\)
In the multiplication of \(8 \times 7 = 56\), what are the names given to the 8 and 7 and the 56?
- Answer
-
8 and 7 are factors; 56 is the product
Exercise \(\PageIndex{2}\)
Multiplication is a description of what repeated process?
- Answer
-
Addition
Exercise \(\PageIndex{3}\)
In the division \(12 \div 3 = 4\), what are the names given to the 3 and the 4?
- Answer
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3 is the divisor; 4 is the quotient
Exercise \(\PageIndex{4}\)
Name the digits that a number must end in to be divisible by 2.
- Answer
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0, 2, 4, 6, or 8
Exercise \(\PageIndex{5}\)
Name the property of multiplication that states that the order of the factors in a multiplication can be changed without changing the product.
- Answer
-
commutative
Exercise \(\PageIndex{6}\)
Which number is called the multiplicative identity?
- Answer
-
1
For problems 7-17, find the product or quotient.
Exercise \(\PageIndex{7}\)
\(14 \times 6\)
- Answer
-
84
Exercise \(\PageIndex{8}\)
\(37 \times 0\)
- Answer
-
0
Exercise \(\PageIndex{9}\)
\(352 \times 1000\)
- Answer
-
352,000
Exercise \(\PageIndex{10}\)
\(5986 \times 70\)
- Answer
-
419,020
Exercise \(\PageIndex{11}\)
\(12 \times 12\)
- Answer
-
144
Exercise \(\PageIndex{12}\)
\(856 \div 0\)
- Answer
-
not defined
Exercise \(\PageIndex{13}\)
\(0 \div 8\)
- Answer
-
0
Exercise \(\PageIndex{14}\)
\(136 \div 8\)
- Answer
-
17
Exercise \(\PageIndex{15}\)
\(432 \div 24\)
- Answer
-
18
Exercise \(\PageIndex{16}\)
\(5286 \div 37\)
- Answer
-
142 remainder 32
Exercise \(\PageIndex{17}\)
\(211 \times 1\)
- Answer
-
211
For problems 18-20, use the numbers 216, 1,005, and 640.
Exercise \(\PageIndex{18}\)
Which numbers are divisible by 3?
- Answer
-
216; 1,005
Exercise \(\PageIndex{19}\)
Which number is divisible by 4?
- Answer
-
216; 640
Exercise \(\PageIndex{20}\)
Which number(s) is divisible by 5?
- Answer
-
1,005; 640