# Session 1:
Title of the puzzle
Solve these without a calculator. What is 10 x 20?
- 10 x 20
- 22 x 30
- 68 x 70
Can you do each of these within 10 seconds?
Have you thought about doing this in multiple bites?
Step 1
Try multiplying in two steps.
Step 2
20 = 10 x 2.
10 x 20
10 x 10 x 2
100 x 2
200
Check that your answer has blah.
Title of the puzzle
Solve these without a calculator. What is 10 x 20?
- 10 x 20
- 22 x 30
- 68 x 70
Can you do each of these within 10 seconds?
Have you thought about doing this in multiple bites?
Step 1
Try multiplying in two steps.
Step 2
20 = 10 x 2.
10 x 20
10 x 10 x 2
100 x 2
200
Check that your answer has blah.
Title of the puzzle
Solve these without a calculator. What is 10 x 20?
- 10 x 20
- 22 x 30
- 68 x 70
Can you do each of these within 10 seconds?
Have you thought about doing this in multiple bites?
Step 1
Try multiplying in two steps.
Step 2
20 = 10 x 2.
10 x 20
10 x 10 x 2
100 x 2
200
Check that your answer has blah.