Starter quiz
- 630 can be partitioned as __________.
- 6 tens and 3 tens
- 6 hundreds and 0 ten
- 6 hundreds and 3 tens ✓
- 6 hundreds and 30 tens
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- Lucas is chanting his 5 times tables: 5, 10, 15, ___. What comes next?
- 19
- 20 ✓
- 21
- 22
-
- Lucas is chanting his 5 times tables in descending order: 60, 55, 50, ______. What comes next?
- '45' ✓
- Use short multiplication to calculate this question: 37 × 2 = ______
- '74' ✓
- Calculate and sort the multiplication equations into descending order.
- 1⇔4 × 44
- 2⇔45 × 3
- 3⇔44 × 3
- 4⇔0 × 46
- Use short multiplication to solve this question: Jacob has 29 packets of sweets. Each packet has 3 sweets. How many sweets does her have altogether?
- '87' ✓
Exit quiz
Select the correct short multiplication for this representation.- 41 × 3
- 31 + 4
- 1 × 31
- 4 × 31 ✓
-
Select the correct short multiplication for this representation.- Which short multiplication is correct for: 52 × 3 =
Look at the short multiplication. True or false: You will need to regroup in the 10s.- True ✓
- False
- The product is 205 which is the correct short multiplication?
Find the missing factor.- '61' ✓
Worksheet
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Presentation
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Lesson Details
Key learning points
- If the product of the single digit and the tens number is greater than 100 then you regroup ten tens into one hundred.
- Record the additional hundred or hundreds in the hundreds column, one column to the left of the tens digits.
- Short multiplication results in only one product being recorded.
- There are similarities and differences between the expanded recording and short multiplication.
Common misconception
Pupils may not align or regroup correctly leading to an inaccurate calculation.
Reiterate that if the product of the single digit and the tens number is greater than 100 then you regroup ten tens into one hundred.
Keywords
Short multiplication - A method using columns to set out and calculate a multiplication is short multiplication.
Regroup - The process of unitising and exchanging between place values is known as regrouping.
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