Your card adds a 3 percent foreign fee to every charge abroad.
3% of $250
What is the fee on a 250 dollar hotel bill, in dollars?
The answer is $7.50. One percent of 250 is 2.50, and three copies of it come to 7.50. Finding one percent first keeps every number small enough to hold.
Find one percent of the bill by moving the point two places, then take three of them.
The counter offers one 16 inch pizza or two 10 inch pizzas for the same money.
Which order gives you more pizza?
The answer is The 16 inch one. Area grows with the square of the width. One 16 inch circle is 201 square inches, and two 10 inch circles together come to 157.
Pizza is sold by area, so compare the circles rather than the widths.
Two players are all in before the flop: a pair of twos against ace king of different suits.
Which hand wins more often?
The answer is The pair of twos. The twos are already a pair, and ace king has to pair up to pass them. Over every board the twos take it about 52 times in 100.
Ask which hand is already made and which one still has to catch a card.
A pallet holds 24 boxes and the truck takes 36 pallets.
24 × 36
How many boxes fit in one truck?
The answer is 864 boxes. Split 36 into 30 and 6. Twenty four times 30 is 720, twenty four times 6 is 144, and the two parts add to 864.
Split the larger factor into a round part and a small one, then add the results.
A backpack and a water bottle cost $46 together. The backpack costs $40 more than the bottle.
What does the bottle cost?
The answer is $3. Take the $40 gap out of $46 and $6 is left for the two items to share. Half each gives a $3 bottle and a $43 backpack.
Take the forty dollar gap out of the total first, then share what is left.