Lesson 04: Adding and Subtracting Decimals with Many Non-Zero Digits | Unit 5: Arithmetic in Base Ten

Draw

For the subtraction problem $$7.2 - 3.67$$ , circle the correct calculation.

Draw

For the subtraction problem $$16 - 1.4$$ , circle the correct calculation.

Open Ended

Explain how you could find the difference of 1 and 0.1978.

Open Ended

Explain or show how you could find the difference of 1 and 0.1978.

Open Ended

A chemist orders a jar labeled to contain 0.384 kilogram of a chemical she needs for an experiment. The actual weight of the chemical sample she receives is 0.3798 kilogram. Is the chemical sample heavier or lighter than the weight stated on the label? Explain how you know.

Open Ended

A chemist orders a jar labeled to contain 0.384 kilogram of a chemical she needs for an experiment. The actual weight of the chemical sample she receives is 0.3798 kilogram. How much heavier or lighter is the sample than stated on the label? Show your reasoning.

Multiple Choice

What is the unknown quantity that completes the calculation 1.036 + ___ = 4?

• 2.000
• 3.500
• 2.964
• 1.500

Multiple Choice

What is the unknown quantity that completes the sum 0.738 + ___ = 1?

• 0.75
• 0.5
• 0.262
• 0.1

Multiple Choice

What is the unknown quantity that completes the calculation 0.5137 + ? = 1?

• 0.4000
• 0.5000
• 0.4860
• 0.4863

Open Ended

Calculate the difference for the following and show your reasoning: $$13.2 - 1.78$$ .