Solve by drawing: Re-draw answer 1st draw 3 groups and cross out 1 ½

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Presentation transcript:

Solve by drawing: Re-draw answer 1st draw 3 groups and cross out 1 ½ of 4/5 Re-draw answer and cross out 1 ½

Sketch the area model. Then write the equation and count up the product. a) The area model contains: 1 flat 6 rods 8 unit cubes  ____ x _____ = _____ b) The area model contains: 1 flat 7 rods 12 unit cubes  ____ x _____ = _____

Draw a place value chart: Ten thousands Thousands Hundreds Tens Ones Take your white board supplies and find a place at one of the white boards. I will label every other person “Alpha” and the remaining students are “Betas”

Explain what just happened as completely as possible! Hundreds Tens Ones Explain what just happened as completely as possible! Discuss. Both partners: write the answer on your mini-white boards. There will be a part (b), too.

Part (a) again: WHAT HAPPENED? Hundreds Tens Ones Can you explain it and write an equation? 2 x 10 = 200 (b) Hundreds Tens Ones 20 x 10 = 200

Betas rotate clockwise to the next Alpha.

Explain what just happened as (a) Hundreds Tens Ones Explain what just happened as completely as possible. There will be a part (b), too.

2 x 100 = 200 2 x 1000 = 2000 Equations? (a) Hundreds Tens Ones Equations? 2 x 100 = 200 (b) Thousands Hundreds Tens Ones 2 x 1000 = 2000

Write a RULE (in words) for multiplying by 10, 100, or 1000.