Boba Maths

Year 4 · Spring term · Multiplication and division B · Step 6

Year 4 Informal methods of multiplication worksheets with answers

Multiply a 2-digit number by a 1-digit number by partitioning, with area models and number sentences. A free editable Word sheet with eight fluency and six reasoning questions. The answers follow the questions: the same sheet again with every answer in red.

Download the worksheets

Printing tip: the red answers are in the same file, after the questions. For pupils, print only the pages before the red answers (in Word, choose the pages in the print box). Keep the full file for marking.

Print on A4 portrait: every page carries the sheet twice, side by side, so you can cut down the middle and two pupils each get a half to stick in their books. Every question sits in its own box and pupils write their answers in their book. The answers follow the questions in the file: the same sheet again with every answer in red. It opens in Word, Google Docs, Pages and LibreOffice, so you can change numbers, delete questions or add your own. There is no scaffolded version of this step yet.

Not scaffolded sheet

First page of the not scaffolded Informal methods of multiplication sheet, printed twice side by side

The same questions without the extra support. For pupils working at the expected standard: eight fluency questions first, then the reasoning questions.

Answer in your book (.docx)

Sample questions from this step

These are real questions from the first set of the sheet (two from the fluency page, two from the reasoning page). Open each one to see the answer.

  1. Complete the area model for 33 × 9.
    So 33 × 9 = ____
    Show the answer

    297

  2. The area model shows 16 × 3 = 48. Write the missing number.
    Missing number: ____
    Show the answer

    18

  3. 85 × 4 = 300.
    Is Boba correct? Circle yes or no.
    Circle yes or no.
    What is the correct answer? ____
    Explain Boba’s mistake.
    Show the answer

    No; 340; 85 × 4: 80 × 4 = 320 and 5 × 4 = 20, so the answer is 340. Boba did not count all of the tens.

  4. The area model shows 45 × 5 = 225. Write the missing number.
    Missing number: ____
    Show the answer

    25

What is on each sheet

  • Fluency: eight questions that start easy and get harder, with the key skill of the step practised in different ways.
  • Reasoning: questions with pictures, tables and number lines (spot the mistake, true or false and explain, puzzles with one answer, an open-ended task).
  • Answers in the same file: the sheet again with every answer in red, so there is only one file to download.
  • Boba characters give the instructions in speech bubbles. They are decoration only.

Why one set of questions?

More in Multiplication and division B

All Multiplication and division B steps · Year 4 overview