Write an equivalent expression. Use a commutative law.9 + b
A. 9(1 + b)
B. b9
C. 9b
D. b + 9
Answer: D
Mathematics
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Multiply and reduce to lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics
Order the decimals from least to greatest.3.09, 3.9, 3.099, 3.999
A. 3.09, 3.9, 3.099, 3.999 B. 3.999, 3.9, 3.099, 3.09 C. 3.099, 3.09, 3.999, 3.9 D. 3.09, 3.099, 3.9, 3.999
Mathematics
The double-line graph shows temperature highs and lows for a week. 
On what day of the week was the difference between the high temperature and the low temperature the greatest? What was this difference in temperature?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Round each number to its highest place value to estimate the product or quotient.23 ? 58
A. 1200 B. 3000 C. 1800 D. 1000
Mathematics