Using the Grid Method For Multiplication Learning Objective

Using the Grid Method For Multiplication

Learning Objective To be able to use the grid method to multiply numbers with up to four digits. Success Criteria • I can multiply using multiples of powers of 10. • I can multiply using the grid method with numbers up to four digits. • I can solve problems using the grid method.

Starter Can you answer the following? 3× 5= 30× 50= 300× 500=

Multiplication Rules Can you work out the rule that works for any multiplication of two numbers, where the numbers end in one or more zeroes?

Grid Method for Multiplication We are going to multiply numbers by partitioning them and using a grid.

Multiplication: Grid Method (HTU × U) 183 x 6 = 1098 x 100 80 3 6 600 480 18 Break down the 1 st number into hundreds, tens and units and put both numbers into a grid Multiply each digit in the 1 st number by the 2 nd number 600 480 18 1098 Find the total of the 3 numbers you got by multiplying

Multiplication: Grid Method (HTU × U)

Multiplication: Grid Method (THTU × U) 2581 x 3 Have a go at this example using the grid method.

Multiplication: Grid Method (THTU × U) 2581 x 3 = 7743 x 2000 500 80 1 3 6000 1500 240 3 Break down the 1 st number into thousands, hundreds, tens and units and put both numbers into a grid Multiply each digit in the 1 st number by the 2 nd number 6000 1500 240 3 7743 Find the total of the 4 numbers you got by multiplying

Multiplication: Grid Method (THTU × U)

Multiplication: Grid Method (TU × TU) 14 x 26 x 20 6 Have a go at this example using the grid method. The process is slightly different when each number is more than one digit.

Multiplication: Grid Method (TU × TU) 14 x 26 = 364 x 10 4 20 200 80 6 60 24 200 80 60 24 364 Find the total Break down the 1 st number into tens and units Break down the 2 nd number into tens and units Multiply each digit in the 1 st number by the 2 nd number

Multiplication: Grid Method (TU × TU)

Your Turn Work through the activity sheet, which tests your use of the grid method.