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The Multiplying 4 digits by 1 digit with visual models exercise appears under the 4th grade (U.S.) Math Mission. This exercise uses a visual measurement model to better understand the concepts of multiplication and place-value.

Types of Problems

There is one type of problem in this exercise:

  1. Multiply the numbers: This problem has a multiplication problem involving a 4-digit number and a 1-digit number. The student is supposed to break-down the values of the 1-digit number multiplied against every place value. After finding these, they can then add up these numbers to get the final product.
    4by1-1

    Multiply the numbers

Strategies

This exercise is easy to get accuracy badges because it is still just multiplication in the end. The speed badges are medium because there are several answers that need to be individually filled in.

  1. Multiplying by the digit by the place values can be done easily and the model makes the product clear. The initial multiplication (the 4-digit by the 1-digit) can be done in the calculator to allow you to skip the adding step, but this ignores the spirit of practicing the distributive property.

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