Lesson Worksheet: Multiplying a Two-Digit Number by a One-Digit Number: Column Method with Regrouping Mathematics • 4th Grade

In this worksheet, we will practice using the standard algorithm to multiply a two-digit number by a one-digit number for calculations where there is regrouping.

Q1:

Find 38×4.

Q2:

Look at how Isabella multiplied 37 by 2.

Let’s use this method to find 16×4.

Multiply the ones. How many tens will you get after regrouping?

Multiply the tens and add the tens you regrouped. How many tens are there?

What is 16×4?

Q3:

David used base ten blocks to help him multiply 46 and 3.

Look at how he wrote down his answer.

Use base ten blocks to find the number of tens that should be written where the ? is.

  • A3
  • B2
  • C1
  • D0

Use base ten blocks to find the number of hundreds that should be written where the ? is.

  • A3
  • B2
  • C1
  • D0

What is the product?

  • A102
  • B100
  • C121
  • D111

Q4:

Arrange the solutions of these expressions in ascending order.

  • A42,64,77,84
  • B84,77,64,42
  • C208,231,516,518
  • D518,516,231,208

Q5:

This robot multiplies any number by 7 to get an answer. What would the answer in the following case be?

Q6:

What is the number that can replace the question mark?

Q7:

Find the result of the following: 29×3

Q8:

Find the number that can replace the question mark in the following:

Q9:

Look at this multiplication with an error in the answer: 34×4126

Which digit in the answer is wrong and needs to be replaced to make the answer correct?

Write the correct answer.

Q10:

Consider the following multiplication problem: 72×642

What is the missing digit?

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