Math Antics

What is a key recommendation to make multi-digit multiplication much easier?

• Always use a calculator.

• Memorize basic multiplication facts.

• Only multiply numbers with the same number of digits.

• Start multiplying from the leftmost digit.

When setting up a multi-digit multiplication problem in stacked form, which number should generally be placed on top?

• The number with the fewest digits.

• The number with the most digits.

• The smaller numerical value.

• The larger numerical value.

In the first example of 137 multiplied by 5, what is the digit placed in the ones column of the answer and what digit is carried over to the tens column?

• 5 in ones column, 3 carried.

• 3 in ones column, 5 carried.

• 7 in ones column, 5 carried.

• 5 in ones column, 0 carried.

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In the second example of 2,617 multiplied by 4, what is the result of the second multiplication step (multiplying 4 by the tens digit '1') after adding any carried digits?

• 4

• 6

• 8

• 10