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Magazine Problem 19
Define a variable. Then write an equation and solve. The sum of 9 and a number is 36
Problem 20
Evaluate each expression if \(x=7, y=3,\) and \(z=9\) $$4 z-3 y$$
Problem 21
Name the property shown by each statement. $$(4+5)+15=4+(5+15)$$
Problem 21
Using eight coins, how can you make change for 65 cents that will not make change for a quarter?
Problem 23
Name the property shown by each statement. $$7 k+0=7 k$$
Problem 23
Evaluate each expression if \(x=7, y=3,\) and \(z=9\) \(2 x+3 z+5 y\)
Problem 24
Use the following information. A standard shower head uses about 6 gallons of water per minute. The table shows the relationship between time and the water used. (TABLE CANNOT COPY) Given \(m,\) the number of minutes, write an equation that can be used to find \(g\) the number of gallons used.
Problem 25
Use the following information. A standard shower head uses about 6 gallons of water per minute. The table shows the relationship between time and the water used. (TABLE CANNOT COPY) How many minutes elapsed if 72 gallons of water were used?
Problem 26
Find each sum or product. Explain your reasoning. $$11+8+19$$
Problem 26
Think of a 1-to-9 multiplication table. Are there more odd or more even products? How can you determine the answer without counting?
