Times are different these days. Kids are growing up in a world of microwaves, fast food chains, Nintendo, Wifi, iPads, along with a ton of other technical marvels.
Subtract 1-, 2-, or 3-digit numbers from 3- and 4-digit number with/without renaming
Subtract 1- or 2-digit number from a 2-digit number with/without renaming
How much of an apple pie has been eaten? The answer to this question can be expressed in percentages, 50%; or in decimals, 0.5; or in fraction, ½. In other words, half of mom's delicious apple pie is gone.