ALEX Classroom Resource

Students:

• Efficiently use strategies based on place value and properties of operations to multiply one-digit numbers by multiples of 10 (from 10-90) and justify their answers.

Students know:

• a variety of strategies or tools to find products (skip counting, properties of operations, concrete materials, number lines, arrays, etc.).

Students are able to:

• Find the product of a 1-digit factor and multiple of 10 (from 10 to 90).
• Use concrete materials and pictorial models to find the product.
• Use properties of operations to find the product.
• Justify products.

Students understand that:

• A one-digit number multiplied by ten gives a multiple of ten. Ex: 6 x 10 = 60 is the same as that number of ones (60) or that number of tens (6 tens).
• Adding a zero to the product of two non-zero whole numbers does not demonstrate the relationship between the product and its place value.

Learning Objectives:
M.3.12.1: Model place value by multiplying vertically.
M.3.12.2: Model properties of operations by multiplying horizontally.
M.3.12.3: Recall basic multiplication facts.
M.3.12.4: Recall multiplication as repeated addition.
M.3.12.5: Apply properties of operations as strategies to add.