1) <span>Mount Rainier is 14,410 feet high. Mount McKinley is 20,320 feet high. How much taller is Mount McKinley?
</span>requires subtraction operation Mount Rainier is ---------------------------14,410 feet high Mount McKinley is -------------------------20,320 feet high
20320-14410=5910 feet hight Mount McKinley is 5910 feet hight much taller
2) <span>If Babe Ruth averaged 46 home runs per year, how many home runs did he hit in 12 years? </span>requires multiplication operation 46 home runs per --------------------year X----------------------------------------12 year x=12*46=552 home runs in 12 years
3) What’s the difference between paying $10,000 cash for a car or paying a loan of $200 per month for 60 months?
requires multiplication operation requires subtraction operation paying cash------------------------------------------------------$10,000 $200 per month for 60 months----------------------200*60=$12,000 12000-10000=$2000 the difference is $2000 4) <span>Ken sold $700 worth of digital cameras, $2,394 worth of laptops, and $833 worth of vacuum cleaners. Digital cameras cost $175 each, laptops cost $399 each, and vacuum cleaners cost $119 each. If Ken earns a $35 commission for each sale, how much did he earn in commissions in all?
</span><span>requires division operation </span>requires multiplication operation requires sum operation
digital cameras------------------------$700/175=4-------4*35=$140 laptops-------------------------------------$2394/399=6-----6*35=$210 vacuum cleaners------------------------$833/119=7------7*35=$245 he earn in commissions-----------140+210+245=$595
5) A parking garage owner has spaces for 70 cars and charges each driver $6 per day for parking. If the garage is full, how much more would the garage owner make if he charged $8 per day?
6) Regina has $25 to buy groceries. She needs 3 cans of dog food, a gallon of milk, 5 pounds of chicken, a box of cereal, and 6 rolls of paper towels. The prices of the items are as follows: dog food—$1.50 a can; milk—$4 a gallon; chicken—$1.55 a pound; cereal—$2.75 a box; paper towels—99 cents a roll. Will Regina have enough money for all the items she needs? If not, how much more will she need?
requires multiplication operation requires sum operation 3 cans of dog food----------------------$1.50*3=4.50 1 gallon of milk-------------------------$4 *1=4 5 pounds of chicken----------------$1.55*5=7.75 1 box of cereal,---------------------$2.75*1=2.75 6 rolls of paper---------------------$0.99*6=5.94
total=4.50+4+7.75+2.75+5.94=24.94
24.94<25 Regina have enough money for all the items
