Kate bought \(3\) shirts for \(\$12\) each and a pair of pants for \(\$25\). She paid with a \(\$100\) bill. How much change did she get?
1. Cost of shirts: \(3 \times \$12 = \$36\).
2. Total cost: \(\$36 + \$25 = \$61\).
3. Change: \(\$100 - \$61 = \$39\).
Her change was \(\$39\).
A school has \(4\) fifth-grade classes, each with \(25\) students. For a field trip, students are put into groups of \(10\). How many groups will there be?
1. Total students: \(4 \times 25 = 100\).
2. Number of groups: \(100 \div 10 = 10\).
There will be \(10\) groups.
Mark had \(200\) marbles. He lost half of them. Then, he bought \(3\) new bags of marbles with \(15\) marbles in each. How many marbles does he have now?
1. Marbles after losing half: \(200 \div 2 = 100\).
2. New marbles bought: \(3 \times 15 = 45\).
3. Final total: \(100 + 45 = 145\).
He now has \(145\) marbles.
A family drove \(120\) miles on Friday and twice that distance on Saturday. On Sunday, they drove \(50\) miles less than they did on Friday. What was the total distance driven over the \(3\) days?
A store had \(500\) video games. They sold \(150\) in the first week. In the second week, they sold half of the remaining games. How many games were left?
1. Games left after week 1: \(500 - 150 = 350\).
2. Games sold in week 2: \(350 \div 2 = 175\).
3. Games left after week 2: \(350 - 175 = 175\).
There were \(175\) games left.
A bakery makes \(30\) dozen donuts each morning. By noon, \(250\) individual donuts have been sold. The rest are put on sale. How many donuts are put on sale?
1. Total donuts made: \(30 \times 12 = 360\).
2. Donuts left for sale: \(360 - 250 = 110\).
There are \(110\) donuts put on sale.
Tom makes \(\$10\) per hour. He worked for \(4\) hours on Monday and \(5\) hours on Tuesday. He then spent \(\$35\) on a gift. How much of his earnings does he have left?
A farmer has \(45\) chickens and \(20\) cows. Each chicken eats \(2\) pounds of feed a week, and each cow eats \(10\) pounds. How much feed is needed for all the animals for one week?
1. Feed for chickens: \(45 \times 2 = 90\) pounds.
2. Feed for cows: \(20 \times 10 = 200\) pounds.
3. Total feed needed: \(90 + 200 = 290\) pounds.
An office needs \(500\) envelopes. They are sold in boxes of \(125\). The office manager buys \(3\) boxes and then finds a pack of \(75\) in a cabinet. How many more envelopes are needed?
1. Envelopes bought: \(3 \times 125 = 375\).
2. Total envelopes on hand: \(375 + 75 = 450\).
3. Envelopes still needed: \(500 - 450 = 50\).
