CBSE Class 7 Maths Chapter 2 - Arithmetic Expressions - Solutions Playlist: • CBSE Class 7 Maths - Chapter 2 Arithmetic ...
Figure it Out Page 37 and Page 38,
Solutions of Figure it Out on Page 37 and Page 38,
Link of previous video of Pages 24 to 33 : • Class 7 Maths Chapter 2 | Arithmetic Expre...
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Explanation in English, Part 2 of Chapter 2 Arithmetic Expressions,
CBSE Class 7 Maths Arithmetic Expressions,
Class 7 Arithmetic Expressions,
Class 7 Arithmetic Expressions Ganita Prakash,
CBSE Class 7 Maths Ganita Prakash,
Chapter 2 Arithmetic Expressions,
Chapter 2 Arithmetic Expressions in English,
Page 37 and Page 38 solutions,
Class 7 Maths Page 37,
Class 7 Maths Page 38,
Solutions to the following questions of Figure it Out on Page 37 and Page 38,
Figure it Out
1. Fill in the blanks with numbers, and boxes with operation signs
such that the expressions on both sides are equal.
(a) 24 + (6 – 4) = 24 + 6 _____
(b) 38 + (_____ _____) = 38 + 9 – 4
(c) 24 – (6 +4) = 24 6 – 4
(d) 24 – 6 – 4 = 24 – 6 _____
(e) 27 – (8 + 3) = 27 8 3
(f) 27– (_____ _____) = 27 – 8 + 3
2. Remove the brackets and write the expression having the same
value.
(a) 14 + (12 + 10) (b) 14 – (12 + 10)
(c) 14 + (12 – 10) (d) 14 – (12 – 10)
(e) –14 + 12 – 10 (f) 14 – (–12 – 10)
3. Find the values of the following expressions. For each pair, first
try to guess whether they have the same value. When are the two
expressions equal?
(a) (6 + 10) – 2 and 6 + (10 – 2)
(b) 16 – (8 – 3) and (16 – 8) – 3
(c) 27 – (18 + 4) and 27 + (–18 – 4)
4. In each of the sets of expressions below, identify those that
have the same value. Do not evaluate them, but rather use your
understanding of terms.
(a) 319 + 537, 319 – 537, – 537 + 319, 537 – 319
(b) 87 + 46 – 109, 87 + 46 – 109, 87 + 46 – 109, 87 – 46 + 109, 87
– (46 + 109), (87 – 46) + 109
5. Add brackets at appropriate places in the expressions such that
they lead to the values indicated.
(a) 34 – 9 + 12 = 13
(b) 56 – 14 – 8 = 34
(c) –22 – 12 + 10 + 22 = – 22
6. Using only reasoning of how terms change their values, fill the
blanks to make the expressions on either side of the equality (=)
equal.
(a) 423 + _____= 419 + _____
(b) 207 – 68 = 210 – ______
7. Using the numbers 2, 3 and 5, and the operators ‘+’ and ‘–’, and
brackets, as necessary, generate expressions to give as many
different values as possible. For example, 2 – 3 + 5 = 4 and 3 – (5 – 2)
= 0.
8. Whenever Jasoda has to subtract 9 from a number, she subtracts 10
and adds 1 to it. For example, 36 – 9 = 26 + 1.
(a) Do you think she always gets the correct answer? Why?
(b) Can you think of other similar strategies? Give some
examples.
9. Consider the two expressions: a) 73 – 14 + 1, b) 73 – 14 – 1. For each
of these expressions, identify the expressions from the following
collection that are equal to it.
(a) 73 – (14 + 1) b) 73 – (14 – 1)
(c) 73 + (– 14 + 1) d) 73 + (– 14 – 1)
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