Mastering Double Digit Multiplication Techniques

What is the first step in the success criteria for solving double-digit algorithms?

• Keep your numbers in columns

• Work in stages

• Introduce the magical zero

• Estimate before you begin

In the example 13 times 23, what is the result of 3 times 3?

• 12

• 9

• 15

• 6

What should you do after multiplying the first set of numbers in the example 13 times 23?

• Add a magical zero

• Multiply the second set of numbers

• Estimate the result

• Add the results together

In the example 26 times 15, what do you do after multiplying 5 times 6?

• Add the results together

• Multiply 5 times 2

• Carry the 3

• Add a magical zero

What is the result of 5 times 2 in the example 26 times 15?

• 15

• 12

• 10

• 7

In the example 37 times 42, what is the result of 2 times 7?

• 12

• 14

• 18

• 16

What should you do after multiplying 4 times 7 in the example 37 times 42?

• Add the results together

• Add a magical zero

• Multiply 4 times 3

• Carry the 2

What is the final result of 37 times 42?

• 1544

• 1574

• 1554

• 1564

What should you do with the little numbers you save for adding up?

• Add them to the final result

• Use them multiple times

• Ignore them

• Use them once and then cross them out

What should you do if you need more videos on double-digit algorithms?

• Put it in the comments

• Ask the teacher

• Watch the same video again

• Search online