To help Babe figure out this problem, you will have to use estimation.

Examples:

Batting average is rounded to the thousandth place.

Earned run average is rounded to the nearest hundredth.

Dollar amounts are rounded to the nearest one or tenth.

Hmm... My batting average is .313. That pitcher's E.R.A. is 6.87. And the 5 hot dogs I just ordered cost a buck thirty-five each. If I want to tip the vendor 2 dollars, how much should I give her?

Addition & Subtraction:

$4.37 + $0.99 + $1.75 + $2.53 -$1.90

= $4.50 + $1.00 + $2.00 + $2.50 - $2.00

= $8.00

Note: When estimating prices, especially at the grocery store, it is better to over estimate rather than underestimate.

Example: $2.65 should be estimated to $3.00 rather than $2.50

Multiplication:

Giant Oranges are $0.85, each so you buy 5. Your bill will be less than $5.00 since you estimate each orange as costing a $1.00 and 5 x $1.00= $5.00.

Division:

You buy 6 drinks for you and your friends, and the bill is $5.80. How much per drink?

About $1.00 because $5.80 is about $6.00 and $6.00 divided by 6 is $1.00