#### Halloween 2024: Mystery Coloring and Graphing Activities!

We’re getting ready for a spooktacular Halloween with some math-y at-home activities!

Oct 18, 2012

One excellent method is **Filling in the Gap**. Take a look at the following example.**8 **+ ** = 13** =

To find the missing number, we can fill in the gap between 8 and 13 by solving:

8 +

Once the two easier problems are solved,

Since

And in words...

How far is it from

Now try this:

So,

The ability to use this "up to and over 10" method relies on the student knowing a series of prerequisite skills. Here is a list of those skills. When mastered, these skills will enable students to have

For each tip, I will also provide practice problems.

5 + 5 = 9 + 9 =

5 + 6 = 5 + 5 + 1 = 8 + 7 = 8 + 8 - 1 =

7 + 2 = 8 + 3 =

6 +

How far apart are 6 and 10?

How far is it from 9 up to 12?

8 + 2 = 6 + 4 =

10 + 7 = 10 + 9 =

10 +

1)

Use the notion of "how much is left" when the numbers are fairly far apart, and count down.

For example,

Use the notion of "how far apart are the two numbers" when the numbers are fairly close to each other, and count up.

For example,

For the following examples, decide which method you would use:

100 - 98 = 100 - 3 = 100 - 87 = 100 - 15 =

Stay tuned for my next Blog posting to learn some more tips to effortlessly recall number facts.

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