# Lesson: Decimal by Whole Number Division

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### Lesson Objective

Divide decimals by whole numbers

### Lesson Plan

 Standard 6NSO.C8 – Select and use appropriate operations to solve problems involving addition, subtraction, multiplication, division, and positive integer exponents with whole numbers and with positive fractions, mixed numbers, decimals and percents. 6NSO.C10 – Accurately and efficiently add, subtract, multiply and divide (with multi-digit divisors) whole numbers and positive decimals Aim/Objective: Key Points ·         Divide decimals by whole numbers ·         Place the decimal straight up from the dividend to the quotient ·         Estimate answer ·         Divide as normal (divide, multiply, subtract, bring down) Assessment: Tyler spent \$409.56 for four new tires for his car.  What was the price per tire?   Paco and three friends equally shared the cost of their dinner.  If the bill was \$33.40, how much did each person pay? Lesson Opening: ·         Display picture examples of splitting/dividing decimals by whole numbers o   Splitting 25¢ by 5 o   Splitting 12 kit kat bars by 4 o   Splitting 2.4ML by 4   ·         Discuss that today we are just thinking about dividing when the amount we are dividing is not a nice neat whole number.    Intro to NM ·         Introduce steps to dividing decimal numbers by whole numbers ·         When dividing a decimal by a whole number, place the decimal in the quotient straight above the decimal in the divided.  Next, divide. ·         Model two examples of writing the problem – placing the decimal straight up and dividing ·         In one example show what happens when you still have a “remainder” and continue to add zeros until the number is complete.     Guided Practice: ·         Students practice two examples – one with a decimal that terminates and one which zeros need to be added. ·         Students review writing division in different ways – and translate problems into different formats. ·         Students practice independently ·

### Lesson Resources

 CW Divide Decimals by Whole Numbers   Classwork 1,569 HW Unit 5 Divide Decimals by Whole Numbers 840 U6 L10 Smooth Operator divide decimals by whole numbers 1,110