Decimal Multiplication Tends to Be Poorly Understood

question 21

Multiple Choice

Decimal multiplication tends to be poorly understood.What is it that students need to be able to do?

• A)Discover the method by being given a series of multiplication problems with factors that have the same digits,but decimals in different places.
• B)Discover it on their own with models,drawings and strategies.
• C)Be shown how to estimate after they are shown the algorithm.
• D)Use the repeated addition strategy that works for whole number.

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Guidelines for writing and formatting numbers in text, which vary based on style guide, context, or purpose.

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Number Rules

Principles governing the usage, operation, and representation of numbers in mathematical contexts or everyday life.