Mental Maths Warm Up

Maths 3

Numbers to 

​Let's warm-up!

​Mental Maths Practice

Multiple Choice

40 + 10 =

Multiple Choice

40 + 20 =

Multiple Choice

40 - 10 =

Multiple Choice

40 + 450 =

Multiple Choice

400 - 100 =

Multiple Choice

400 - 200 =

Multiple Choice

400 + 100 =

Multiple Choice

3500 + 2500 =

• 5000

• 6500

• 6000

Multiple Choice

3000 + 2000 =

• 5000

• 1000

• 6000

Multiple Choice

800 + 2000 =

• 4000

• 3800

• 2800

Multiple Choice

8000 + 450

• 8000

• 8450

• 8800

Multiple Choice

500 + 6000

• 6500

• 6450

• 5600

Multiple Choice

877 + 911

• 6500

• 1788

• 5600

​Let's start our lesson!

​Type YES if ready in the chatbox.

​What are the parts of Subtraction?

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​What are the parts of Subtraction?

Multiple Choice

In what place should I start subtracting?

• Ones

• Tens

• hundreds

• Thousands

Multiple Choice

716 − 243=  

• 473

• 447

• 547

• 347

Multiple Choice

• 309

• 209

• 109

Multiple Choice

What should we do if the sum on the ONES place exceeds 10?

• Regroup

• borrow

Multiple Choice

What do we do to get the correct answer?

• subtract and regroup

• subtract and no regroup

​What is the answer?

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Use your whiteboard.

​Show your answer after 1 minute.

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Multiple Choice

What do we do with this subtraction problem?

• subtract and regroup

• subtract and do not regroup?

​What is the answer?

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​

Use your whiteboard.

​Show your answer after 1 minute.

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​What is the answer?

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Use your whiteboard.

​Show your answer after 1 minute.

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Multiple Choice

What do we do with this addition problem?

• add and regroup

• add and do not regroup

​Can you help to explain the solution?

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​Can you help to explain the solution?

​Can you help to explain

the solution?

​You are in trouble if!

​What if a number is missing?

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​Let's do step by step.

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​Before we end the lesson,

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