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Talk Together London CIC

Written Subtraction 1: use place value partitioning two-digit numbers in columns without borrowing

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Ages 6-12

With the method used in this worksheet, learners can master how to subtract two digit numbers easily by:

  • partitioning 2-digit numbers and recognising their place values in subtraction
  • regrouping the numbers to be subtracted in columns, in order to calculate their difference in writing without decomposition - for example: '38 - 24'.

And, they develop a firm foundation for column maths subtraction with decomposition or borrowing - for example, taking away 29 from 75 or 234 from 321 - which are explained in worksheets Subtraction 3 and 4.

In a nutshell: Confidence breeds more confidence! And, hands on practice in subtracting does wonders for confidence and gradual skills development. Whether homeschooling, working independently or in classroom teaching, this math worksheet will make learners win, and brighten the day.

Carrying over is an important concept to learn, because it makes working with large numbers manageable. For example, when subtracting 14 from 21 in writing, we must carry over because we can not subtract 4 from 1.

Carrying over in subtraction, or as some people refer to it 'borrowing', can be confusing to young learners. Children know how to subtract smaller numbers such as 14 - 9 and get the correct answer. But, when the problem is 465 - 379, subtraction becomes more challenging!

Many times, we teach students the process of working a math problem – but not the 'why' behind it. If students don’t understand how place value works in subtraction, then they may have difficulty with subtraction because they don't understand how 'borrowing' works. 

 

Best get started with it!

 

 

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