Holiday Math Fun

Front

What is the pattern of saving money if you save $2 in January, $4 in February, $8 in March, $16 in April, and continue this pattern?

Back

This is a geometric sequence where each month you double the amount saved from the previous month.

Front

How much money do you have saved by December if you follow the pattern of saving $2, $4, $8, $16, etc. until December?

Back

You will have saved a total of $156 by December.

Front

In 'The 12 Days of Christmas', how do you calculate the total number of gifts received?

Back

You add the gifts received each day, which is a cumulative total: 1 + 2 + 3 + ... + 12 = 78.

Front

If you plow 6 driveways in an hour, how do you find out how long it will take to plow 21 driveways?

Back

Divide the total driveways by the rate: 21 ÷ 6 = 3.5 hours.

Front

What is the total number of keys made if 10 elves each made 10 xylophones with 10 keys each for 10 days?

Back

Total keys = 10 elves × 10 xylophones/elf × 10 keys/xylophone × 10 days = 10,000 keys.

Front

If Sam gives Henry half of his candy canes and Henry eats half of them, how do you find out how many candy canes Henry ate?

Back

If Sam had X candy canes, Henry gets X/2, eats (X/2)/2 = X/4.

Front

What is a geometric sequence?

Back

A geometric sequence is a sequence of numbers where each term after the first is found by multiplying the previous term by a fixed, non-zero number.

Front

What is cumulative addition?

Back

Cumulative addition is the process of adding numbers together in a sequence to find a total.

Front

How do you calculate the time taken to complete a task if you know the rate of work?

Back

Time = Total work / Rate of work.

Front

What is the formula to find the total number of items produced over a period?

Back

Total items = Number of producers × Items produced per producer × Number of days.