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NCERT Textbook- Subtraction | Mathematics for Class 1: NCERT PDF Download

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 Page 1


61
Take Away
Take away     2                Left
Take away                     Left
___________________
___________________
Take Away                     Left
4
Subtraction
4
___________________
5                Take away     2                Left   3
Refer to page no. 141 to develop understanding of subtraction.
Teachers Note
2019-2020
Page 2


61
Take Away
Take away     2                Left
Take away                     Left
___________________
___________________
Take Away                     Left
4
Subtraction
4
___________________
5                Take away     2                Left   3
Refer to page no. 141 to develop understanding of subtraction.
Teachers Note
2019-2020
62 Subtraction
___________________
___________________
6                             4                   =            2
5                              2                  =
9                             4                   =
___________________
5                             1                   =
2019-2020
Page 3


61
Take Away
Take away     2                Left
Take away                     Left
___________________
___________________
Take Away                     Left
4
Subtraction
4
___________________
5                Take away     2                Left   3
Refer to page no. 141 to develop understanding of subtraction.
Teachers Note
2019-2020
62 Subtraction
___________________
___________________
6                             4                   =            2
5                              2                  =
9                             4                   =
___________________
5                             1                   =
2019-2020
63 ___________________
___________________
___________________
=
=
=
=
Subtraction
2019-2020
Page 4


61
Take Away
Take away     2                Left
Take away                     Left
___________________
___________________
Take Away                     Left
4
Subtraction
4
___________________
5                Take away     2                Left   3
Refer to page no. 141 to develop understanding of subtraction.
Teachers Note
2019-2020
62 Subtraction
___________________
___________________
6                             4                   =            2
5                              2                  =
9                             4                   =
___________________
5                             1                   =
2019-2020
63 ___________________
___________________
___________________
=
=
=
=
Subtraction
2019-2020
64 ___________________
___________________
___________________
3            1      =      2
=
=
=
Subtraction
2019-2020
Page 5


61
Take Away
Take away     2                Left
Take away                     Left
___________________
___________________
Take Away                     Left
4
Subtraction
4
___________________
5                Take away     2                Left   3
Refer to page no. 141 to develop understanding of subtraction.
Teachers Note
2019-2020
62 Subtraction
___________________
___________________
6                             4                   =            2
5                              2                  =
9                             4                   =
___________________
5                             1                   =
2019-2020
63 ___________________
___________________
___________________
=
=
=
=
Subtraction
2019-2020
64 ___________________
___________________
___________________
3            1      =      2
=
=
=
Subtraction
2019-2020
65 ___________________
________________________
6 – 2   =
6
– 2
___________________
9 – 5   =
9
– 5
___________________
4 – 4   =
4
– 4
8 – 3   =
8
– 3
___________________
5 – 4   =    1
5
4 –
1
Subtraction
2019-2020
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FAQs on NCERT Textbook- Subtraction - Mathematics for Class 1: NCERT

1. What is subtraction and how is it different from addition?
Ans. Subtraction is a mathematical operation that involves taking away one quantity from another. It is the opposite of addition. While addition combines two or more quantities to find their total, subtraction separates a quantity from another to find the difference between them.
2. How do I subtract two numbers using the borrowing method?
Ans. The borrowing method is used when subtracting two numbers where the digit in the subtrahend (the number being subtracted) is larger than the corresponding digit in the minuend (the number being subtracted from). To subtract using this method, one borrows or regroups from the next higher place value. For example, if we need to subtract 64 from 89, we borrow 1 from the tens place and convert the 8 to 7, making it 17. Then we subtract 4 from 17, resulting in 13.
3. Can subtraction be applied to negative numbers?
Ans. Yes, subtraction can be applied to negative numbers. When subtracting a negative number, it is equivalent to adding its absolute value. For example, if we have -3 minus (-5), we can rewrite it as -3 + 5, which equals 2. Similarly, if we have -7 minus 4, we can rewrite it as -7 + (-4), which equals -11.
4. How can subtraction be used in real-life situations?
Ans. Subtraction is used in various real-life situations, such as calculating change at a store, determining the difference in temperature between two days, finding the remaining time in a movie, or measuring the distance between two locations. It helps us understand the difference or decrease in quantities, making it a useful operation in everyday scenarios.
5. Are there any shortcuts or tricks to improve subtraction skills?
Ans. Yes, there are several tricks and shortcuts to improve subtraction skills. Some methods include using number line diagrams, breaking down numbers into place values, using mental math strategies like adjusting one number to make the subtraction easier, or using estimation to quickly approximate the answer. Regular practice and familiarity with number patterns can also enhance subtraction skills.
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