Surf for More Math

Lesson 5 - Multiplying with Arrays

Use this interactive activity to encourage students to have fun on the Web while learning about multiplying with arrays. Students can try this activity on their own or in pairs.

Goal

Multiply two two-digit numbers.

Builds Upon

Student Book pages 166-168

Instructions for Use

Multiplying with Base 10 Blocks gives students an opportunity to explore multiplying two two-digit numbers using base ten block arrays.

To use Multiplying with Base 10 Blocks, move the sliders to change the length and width of the rectangle. Notice how the multiplication problem changes to reflect the number of base ten blocks added to the rectangle. Click the "Self Check" or "Self Check 2" button to practice multiplying using arrays. To check an answer, click the "Check/Explain" button. To try a new problem, click the "New Problem" button.