an introduction to cross number puzzles across the grades

An Introduction to An Introduction to Cross Number Puzzles Cross Number Puzzles

Across the GradesAcross the Grades

Created by:Created by:Lyn Channey, Kristy Garvin, Karen Kissel, Lyn Channey, Kristy Garvin, Karen Kissel,

Barbara Wennerberg, and Barbara Wennerberg, and Amy ZellAmy Zell

What is this?What is this?

33 11 ??

44 22 ??

?? ?? ??

What could you do with this?What could you do with this?

33 11 ??

44 22 ??

?? ?? ??

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

6

4

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

6

4

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

6

4

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

6

4

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

64

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

64

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

7

8

3

5

6

4

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2 7

8

3

5

6

4

When I point to you, click on the When I point to you, click on the next number to sort these shapes.next number to sort these shapes.

1

2

3

47

8

5

6

How many circles do I have?How many circles do I have?

How many circles do I have?How many circles do I have?

4

How many rectangles do I have?How many rectangles do I have?

4

How many rectangles do I have?How many rectangles do I have?

4

4

How many blue shapes do I have?How many blue shapes do I have?

4

4

How many blue shapes do I have?How many blue shapes do I have?

4

4

4

How many green shapes do I How many green shapes do I have?have?

4

4

4

How many green shapes do I How many green shapes do I have?have?

4

4

4 4

How many total shapes do I have?How many total shapes do I have?

4

4

4 4

How many total shapes do I have?How many total shapes do I have?

4

4

4 4 8

What number sentences could I make?What number sentences could I make?

4 purples + 4 greens = 8 shapes 4 circles + 4 rectangles = 8 shapes

4

4

4 4 8

This is a Kindergarten Cross This is a Kindergarten Cross Number PuzzleNumber Puzzle

In First Grade it might look like this:In First Grade it might look like this:

33 11 44

44 22 66

77 33 1010

Flip it in Second Grade to show Flip it in Second Grade to show subtraction:subtraction:

1010 33 77

66 22 44

44 11 33

Expand it to show two-digit Expand it to show two-digit addition.addition.

1010 55 1515

2020 22 2222

3030 77 3737

What number sentence does this What number sentence does this represent?represent?

1010 55 1515

2020 22 2222

3030 77 3737

15 + 22 = 371010 55 1515

2020 22 2222

3030 77 3737

Now let’s try it with regrouping.

1010 55 1515

2020 66 2626

3030 1111 4141

What number sentence does this represent?

1010 55 1515

2020 66 2626

3030 1111 4141

26 + 15 = 411010 55 1515

2020 66 2626

3030 1111 4141

Array Model of MultiplicationArray Model of Multiplication

4

2

What does this represent?What does this represent?

4

2

2 x 4 = 82 x 4 = 8

4

2

From here it moves to multi-digit From here it moves to multi-digit multiplication.multiplication.

1010 55

2020 200200 100100 300300

22 2020 1010 3030

220220 110110 330330

Array Model

1515

X 20X 20

1010 55

2020

22

Here is what the cross number Here is what the cross number puzzle would look like alone.puzzle would look like alone.

1010 55

2020 200200 100100 300300

22 2020 1010 3030

220220 110110 330330

What number sentence does this What number sentence does this represent?represent?

1010 55

2020 200200 100100 300300

22 2020 1010 3030

220220 110110 330330

15 x 22 = 33015 x 22 = 3301010 55

2020 200200 100100 300300

22 2020 1010 3030

220220 110110 330330

44

66

77 33 1010

In Conclusion…In Conclusion…

1010 55

2020 200200 100100 30030022 2020 1010 3030

220220 110110 330330

1010 55 1515

2020 66 2626

3030 1111 4141

33 11 44

44 22 66

77 33 1010

Any Any Questions?Questions?

Celebrate!Celebrate!You have just expanded your You have just expanded your

knowledge of Math!knowledge of Math!