⛪Home⇐ Class I Subtraction of Numbers Less than 9


Mind Maps
 
 
 


Class I - Maths: Subtraction numbers 1 to 9





At The Table

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Count And Write In The Boxes

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Out of 8 bananas 5 five bananas were eaten.

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How many bananas are left?

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3 bananas are left.

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"When some things are taken away, they are being subtracted".

  • The '-'sign shows subtraction.
  • Use the sign '-' instead of 'take away'.

Cross Out, Say, And Write

subtraction - subtraction = subtraction
  • Form 9, take away 3.
  • say 9 minus 3 equal 6 or write 9 - 3 = 6
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  • From 6, take away 4.
  • Say 6 minus 4 equals 2
  • Write 6 - 4 = 2
subtraction - subtraction = subtraction
  • Form 7, take away 5.
  • say 7 minus 5 equal 2 or write 7 - 2 = 2
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  • From 9, take away 5.
  • Say 9 minus 5 equal 4.
  • Write 9 - 5 = 4
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  • From 5, take away 2.
  • Say 5 minus 2 equal 3 or write 5 - 2 = 3
subtraction - subtraction = subtraction
  • Form 4, take away 3.
  • say 4 minus 3 equal 1 or write 4 - 3 = 1

Subtracting One

  • Out of 7 oranges, 1 is eaten. How many are left?
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  • "When we subtract 1 from a number, we get the number just before the given number".

Subtract 1 And Write The Numbers In The Boxes

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Subtracting Zero

  • There are 4 biscuits. None is eaten.
  • How many biscuits are left?
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  • 4 biscuits are left.So,
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Subtraction On The Number Line

  • John had 10 balloons. He gave 3 balloons to his friend. How many are left with him?
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  • Start at 10. Then go backwards to 3 spaces.
  • You will reach 7. So,
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Use The Number Lines To Subtract

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Subtraction On The Abacus

  • Subtract 3 from 4.
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  • Put 4 beads on the abacus. Cross out 3 beads.
  • 1 bead is left.So,
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Draw The Beads On The Abacus And Subtract

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  • 5 - 2 = 3
  • 6 - 1 = 5
  • 8 - 4 = 4

Backward Counting For Subtraction

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Subtract 4 from 6 by using the number strip.

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  • Keep your finger on 6 on the number strip.
  • Then move the finger backward by 4 spaces. You will reach 2.So,
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Use The Number Strip To Subtract And Write The Numbers In The Boxes

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  • 9 - 4 = 5
  • 7 - 5 = 2
  • 8 - 7 = 1
  • 9 - 2 = 7
  • 6 - 5 = 1
  • 8 - 1 = 7

Subtracting A Number From Itself

  • Subtract 7 from 7 using the number strip.
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  • Keep your finger on 7 on the number strip, and then move it backward by 7 spaces. You will reach 0.So,
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"When a number is subtracted from itself, the answer is always zero".

Use The Number Strip To Subtract And Write The Answers In The Boxes

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Vertical Subtraction

"Numbers can also be subtracted vertically which is known as vertical subtraction".

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We can see that, the answer remains the same if the subtraction is done vertically or horizontally.

Subtract The Following

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Subtraction Facts

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Cross Out, Count And Write

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Word Problems

Subtract And Write The Numbers In The Boxes

  • There are 5 flowers in a vase, 2 flowers dried. How many flowers are left?
    So, 3 flowers are left in the vase.
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  • There were 7 cars in the garage. Out of which 5 cars moved away. How many cars are left?
    2 cars are left in the garage.
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Making Both Sides The Same

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  • "="is an equal sign. An equal sign means both sides are the same.For example:
  • 2 is the same as 1 + 1
  • 6 is the same as 4 + 2
  • 8 is the same as 5 + 3

Fill In The Boxes To Make Both Sides The Same

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