How to Use a Hundred Chart

by Teri Spray

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Visual Counting

1. Count the numbers on the chart until they are easily said from memory.

2. Count the numbers on the chart until a child can spot any number quickly. (Find the fifty, Find sixty-two, find 82, etc.)

3. Count the numbers on the chart until the child can see patterns emerging. (Each column has the same number in the ones place. Each row has the same number in the tens place. Every fifth number ends in five or zero. Every tenth number ends in zero. ... etc..

Visual Addition/ Subtraction
4. Use a penny to move your marker forward or backward to add and subtract. This way you will count moves and not numbers. (8 + 5=13 penny on the 8, move to the right five times and land on the 13.)

5. Use copies of the hundred chart. Use one copy for each of your multiplication/division facts Count the numbers by twos. Use a highlighter pen and color every two factor. (2,4,6,8,10, ...etc) Now, when you refer to this chart for multiplication, the child will know how to get to the answer and why answer is what it is. (count up 5 two facts, to get to 10, because 5 x 2 is 10) Now you will know why 6 x 7 = 42 when you count six seven facts and land on 42. (7,14, 21, 28, 35,42)

Visual Multiplication/ Division
6. Count your hundred chart aloud by two's. three's, four's etc. Then use your hundred chart facts to illustrate the facts orally. (Say, "2 times 3 is 6." Meanwhile, point to the 2, the 4, and the 6 to illustrate the fact as you recite the entire fact aloud.

7. Use your colored multiplication charts to explain division to your child. Find a number on the chart, (46 divided by 5) then start from zero and mark the sets of five up until the number 46. You will land on 45 with 9 groups with one left over. Now you can see that 46 divided by 5 is 9 with a remainder of "1."

Fractions/ Decimals/ Percents
Teach fractions, decimals and percents by making the 100 represent 1.00
8. Place a ".O" in front of each single digit. "5" now becomes ".05." place the decimal in front of two digit numbers. ("25" becomes ".25")

9. Color your percents! 10% = one row of your hundred chart. Color 25% by coloring 25 numbers on the chart. (Remember that 100% means one whole unit not 100 units as before.)

10. You can illustrate a few fractions with this chart such as 1/2 of 100 = 50, but most fractions will not illustrate on a hundred chart unless they are factors of 5 or 10. (1/2 of 100 = 50 is illustrated by coloring 1-50 on the chart)