## One Hundred Number Charts

Various sizes of free printable 100-number charts that may be added to your personal homeschool curriculum, or for classroom use, or for use at home.

Don't miss the section "Using 100-Number Charts"
Lessons that use the 100-Number Charts are described
Introduction to Multiplication- "Counting By"
Is it divisible by 3, 6?

### Set One

Set One is a small set 6 printable charts. Each chart takes most of the paper, which just means that it has big squares and big numbers.

Set One is made using the font "kids", which is a rather childish looking font. If the font is an issue and I don't know why I chose to use it, skip to the next set of charts - Set One B.

### 100 Number Charts

100 blank - No numbers
100 3s - Missing every third number
100 4s - Missing every fourth number
100 Missing even numbers
100 Missing odd numbers
100 random - Missing random numbers

### Set One B

This set is similar to the set above in both size and missing number sets.

### 100 Number Charts

100-blank - No Numbers - No Header
100-count-all - No Numbers - Count All - "Count to one hundred and write the missing numbers"
100-full-all - All Numbers - No Header
100-odd - Missing Odd Numbers - "Odd Numbers - Fill in the missing odd numbers."
100-even - Missing Even Numbers - "Even Numbers - Fill in the missing even numbers."
100-by 2's - Count by 2's - " Count by twos and write the missing numbers"
100-by 3's - Count by 3's - " Count by threes and write the missing numbers"
100-by 4's - Count by 4's - " Count by fours and write the missing numbers"
100-by 5's - Count by 5's - " Count by fives and write the missing numbers"

### Before we Leave the Big 100-Number Charts

I'm sure that some of you would like a typeable option for lesson plans or games. I have two typeable 100-number charts. The first one, the PDF is only typeable in the bottom part of the file (see image on left). This typeable could be used for "directions." The second file is a "doc" and the entire file can be typed on, but please leave my name and URL on the file.

"Hundred Board" - Bottom section typeable for directions - What is typed is not saved in adobe reader - Type and Print
Hundred Number Chart - Entire file can be typed on, and please leave my name and URL on the file.

## Two 100-Number Charts per Page

Set Two - The next 3 groups of 100-number charts have smaller boxes and each file will have 2 charts.

### Set Two - 14 Lessons, 1 Blank, 1 Full

The file name describes what is missing from each set of charts.

### 100 Number Charts - Two Lessons per Printout

Pictured here - Missing 9 per Row

### Set Two B - Left - 40 Lessons

Set Two B has two charts per printout. The top chart will have missing numbers in mostly the left side of the 100-number chart and the bottom chart will have a randomly large number of missing numbers.

### 100 Number Charts - Two per printout - 20 Printouts

The order in which the worksheets are presented does not matter because all of the missing number 100-number charts below are random. For that reason, the files are identified with numbers.

### Set Two C - Right - 40 Lessons

Like Set Two B, Set Two C has two charts per printout, but unlike Set Two B, the top chart will have missing numbers in mostly the right side of the 100-number chart and the bottom chart will have a random amount of missing numbers.

### 100 Number Charts - Two per printout - 20 Printouts

The order in which the worksheets are presented does not matter because all of the missing number 100-number charts below are random. For that reason, the files are identified with numbers.

## 100-Number Charts - Odds and Ends

The file names describe the printout

## Using 100-Number Charts

### Introduction to Multiplication- "Counting By"

Counting by 2's, 3's, 4's, 5's, 6's, 7's, 8's, 9's, and 10's

Minimum 10 Lessons -
-Choose which type of chart to use - either filled in or blank or one that has missing numbers.
-Choose which number to "count by."

-- If using a fill-in type chart, have the child complete the chart first.
-- Next have the child count by and highlight either the 2's, 3's, 4's, 5's, etcetera.

The chart pictured here has been highlighted by 2's.

## 100-Number Charts and the Middle Grades

### Math Shortcuts, is it Divisible by 3, 6

The student could start learning a few math tricks by observing the patterns in the chart and the numbers.

Observing and checking if highlighted number is divisible by 3: This chart has been highlighted by 3's, so clearly every number that is highlighted will be divisible by 3, but there is something else to notice.

If the sum of the digits of a number is divisible by 3, then the number is divisible by 3. Let's use number 93 to illustrate this - Here are the steps

1. Number 93 - Add 9+3
2. 9+3 Equals 12
3. 12 is divisible by 3

Another Example:

1. Number 927
2. Add its digits: 9 + 2 + 7 = 18
3. The sum is 18, 18 is divisible by 3, and therefore; the number 927 is divisible by 3.

Note: 927 is also divisible by 9 because the sum of the digits [18] is divisible by 9, but it is not divisible by 6. Why?

The answer to Why is 927 not divisible by 6 when it is divisible by both 3 and 9? 927 is an odd number and not divisible by 2. Continue reading to find out how to check if a number is divisible by 6.

Divisible by 6: Numbers are divisible by 6 if they are divisible by both 2 and 3.

Lesson- Print a 100-number chart and highlight the 2's with one color and highlight the 3's with another color.
Check - Discover if the numbers that have both colors are divisible by 6.

##### Definition

Divisible: division in which there is no remainder

##### Not Related to the Charts

Divisible by 9: Numbers are divisible by 9 if the sum of the digits are divisible by 9. See the example below

1. Number 891027
2. Add its digits: 8 + 9 + 1 + 0 + 2 + 7 = 27 (2+7=9)
3. The sum of the individual digits in 891027 equals 27, 27 is divisible by 9, and therefore; the number 891027 is divisible by 9.

The 9's - Notice the pattern
1x9=9
2x9=18 (1+8=9)
3x9=27 (2+7=9)
4x9=36 (3+6=9)
5x9=45 (4+5=9)
6x9=54 (5+4=9)
7x9=63 (6+3=9)
8x9=72 (7+2=9)
9x9=81 (8+1=9)

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