Slide 1

MathOnMonday®
Presents:

Building Math Courage®
A program designed for Adults or
Kids who have struggled to learn
their Math in the traditional
classroom!
Lesson 20.9
Learning Your Nines
Dirk M. Horton
[email protected]

10’s Digit of Product
1’s Digit of Product
Multiply by

Click your mouse to find
the relationship between
the “multiply by” and the
“10’s digit” of the product.
The 10’s digit of the product
Is 1 less than the “multiply by”.

Click your mouse to find
the relationship
between the “10’s Digit”
and the “1’s digit of the
product.
The 1’s Digit + the 10’s digit
of the product always = 9.
MathOnMonday© (March 2000)

-1

9x2=
9x3=
9x4=
9x5=
9x6=
9x7=
9x8=
9x9=
-1

18
27
36
45
54
63
72
81

1+8=9
2+7=9
3+6=9
4+5=9
5+4=9

6+3=9
7+2=9
8+1=9

Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

One More Time!
Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

Well done you are learning your nines! Practice a
few times and you be a nines expert!

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63


Slide 2

MathOnMonday®
Presents:

Building Math Courage®
A program designed for Adults or
Kids who have struggled to learn
their Math in the traditional
classroom!
Lesson 20.9
Learning Your Nines
Dirk M. Horton
[email protected]

10’s Digit of Product
1’s Digit of Product
Multiply by

Click your mouse to find
the relationship between
the “multiply by” and the
“10’s digit” of the product.
The 10’s digit of the product
Is 1 less than the “multiply by”.

Click your mouse to find
the relationship
between the “10’s Digit”
and the “1’s digit of the
product.
The 1’s Digit + the 10’s digit
of the product always = 9.
MathOnMonday© (March 2000)

-1

9x2=
9x3=
9x4=
9x5=
9x6=
9x7=
9x8=
9x9=
-1

18
27
36
45
54
63
72
81

1+8=9
2+7=9
3+6=9
4+5=9
5+4=9

6+3=9
7+2=9
8+1=9

Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

One More Time!
Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

Well done you are learning your nines! Practice a
few times and you be a nines expert!

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63


Slide 3

MathOnMonday®
Presents:

Building Math Courage®
A program designed for Adults or
Kids who have struggled to learn
their Math in the traditional
classroom!
Lesson 20.9
Learning Your Nines
Dirk M. Horton
[email protected]

10’s Digit of Product
1’s Digit of Product
Multiply by

Click your mouse to find
the relationship between
the “multiply by” and the
“10’s digit” of the product.
The 10’s digit of the product
Is 1 less than the “multiply by”.

Click your mouse to find
the relationship
between the “10’s Digit”
and the “1’s digit of the
product.
The 1’s Digit + the 10’s digit
of the product always = 9.
MathOnMonday© (March 2000)

-1

9x2=
9x3=
9x4=
9x5=
9x6=
9x7=
9x8=
9x9=
-1

18
27
36
45
54
63
72
81

1+8=9
2+7=9
3+6=9
4+5=9
5+4=9

6+3=9
7+2=9
8+1=9

Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

One More Time!
Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

Well done you are learning your nines! Practice a
few times and you be a nines expert!

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63


Slide 4

MathOnMonday®
Presents:

Building Math Courage®
A program designed for Adults or
Kids who have struggled to learn
their Math in the traditional
classroom!
Lesson 20.9
Learning Your Nines
Dirk M. Horton
[email protected]

10’s Digit of Product
1’s Digit of Product
Multiply by

Click your mouse to find
the relationship between
the “multiply by” and the
“10’s digit” of the product.
The 10’s digit of the product
Is 1 less than the “multiply by”.

Click your mouse to find
the relationship
between the “10’s Digit”
and the “1’s digit of the
product.
The 1’s Digit + the 10’s digit
of the product always = 9.
MathOnMonday© (March 2000)

-1

9x2=
9x3=
9x4=
9x5=
9x6=
9x7=
9x8=
9x9=
-1

18
27
36
45
54
63
72
81

1+8=9
2+7=9
3+6=9
4+5=9
5+4=9

6+3=9
7+2=9
8+1=9

Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

One More Time!
Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

Well done you are learning your nines! Practice a
few times and you be a nines expert!

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63


Slide 5

MathOnMonday®
Presents:

Building Math Courage®
A program designed for Adults or
Kids who have struggled to learn
their Math in the traditional
classroom!
Lesson 20.9
Learning Your Nines
Dirk M. Horton
[email protected]

10’s Digit of Product
1’s Digit of Product
Multiply by

Click your mouse to find
the relationship between
the “multiply by” and the
“10’s digit” of the product.
The 10’s digit of the product
Is 1 less than the “multiply by”.

Click your mouse to find
the relationship
between the “10’s Digit”
and the “1’s digit of the
product.
The 1’s Digit + the 10’s digit
of the product always = 9.
MathOnMonday© (March 2000)

-1

9x2=
9x3=
9x4=
9x5=
9x6=
9x7=
9x8=
9x9=
-1

18
27
36
45
54
63
72
81

1+8=9
2+7=9
3+6=9
4+5=9
5+4=9

6+3=9
7+2=9
8+1=9

Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

One More Time!
Click your mouse to see that you learned your 9s. Click for the
problem, think about the 10’s digit, click again, and think about
the 1’s digit, click again and see the result.

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63

Well done you are learning your nines! Practice a
few times and you be a nines expert!

9 x 9 = 81

9 x 3 = 27

9 x 5 = 45
9 x 4 = 36
9 x 2 = 18
9 x 6 = 54
9 x 8 = 72
MathOnMonday© (March 2000)

9 x 7 = 63