Suman and Kashish add and subtract -1 and -6. Suman claims that they can add and subtract the integers in any order and answer would be the same. Kashish says that the answer obtained on subtracting the numbers, by changing their order would be different. Who is correc

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Suman and Kashish add and subtract -1 and -6. Suman claims that they can add and subtract the integers in any order and answer would be the same. Kashish says that the answer obtained on subtracting the numbers, by changing their order would be different. Who is correct?
ers as well.
for whole
Let's Think Beyond
Radha claims that the additive inverse of the additive inverse of an integer is the integer
itself. Do you agree? Why?
entity for
tive
Fun Time 1.2
Complete the statements and identify the property used:
CO, addi Hue in verse
1.
(a)
-21 + 21 = 0
tive), the
3 + (-7) + 12 = 12 + 3 + (-7)
(b)
(c)
-99 + (-23 + 7) = 7 _ + (-23)
(d)
-98 + (-87) =
(e)
-1001 + 0 =
(f)
167+ (-986) + 123 + (-653) =
In a football game, the defender kicks the ball 6 m ahead and then the opponent
2.
team kicks it back by 3 m, 2m and 4 m. Write the numbers as integers and
determine whether the ball has overall moved in the forward or in the backward
direction.
3.
Evaluate the following expressions using suitable properties:
(а)
128 + 23 + (-107) =
(b)
12 +(-34) – (-68) =
(c) (-26)+ 3 + (-7) =,
A mercury thermometer records a temperature of 25°C at 9 p.m. If the temperature
drops by 2°C per hour, what will be the temperature at 2 a.m. on the next day?
In a quiz competition Anuj scores -10, 25, 32 and -3 and Vineeta scores -6, 31, 29
and -1, who scores more? Will changing the order of the scores change the result or
not?
6 Suman and Kashish add and subtract -1 and -6. Suman.claims that they can add
and subtract the integers in any order and answer would be the same. Kashish says
that the answer obtained on subtracting the numbers, by changing their order would
be different. Who is correct?
Write the additive inverse of the following numbers:
(c) -1 :
7.
(a) -9:
(d) -10 :
(b) 8:
Integers are not associative under subtraction. Do you agree? Verify your answer
with an example.
8.
61
SHO
Transcribed Image Text:ers as well. for whole Let's Think Beyond Radha claims that the additive inverse of the additive inverse of an integer is the integer itself. Do you agree? Why? entity for tive Fun Time 1.2 Complete the statements and identify the property used: CO, addi Hue in verse 1. (a) -21 + 21 = 0 tive), the 3 + (-7) + 12 = 12 + 3 + (-7) (b) (c) -99 + (-23 + 7) = 7 _ + (-23) (d) -98 + (-87) = (e) -1001 + 0 = (f) 167+ (-986) + 123 + (-653) = In a football game, the defender kicks the ball 6 m ahead and then the opponent 2. team kicks it back by 3 m, 2m and 4 m. Write the numbers as integers and determine whether the ball has overall moved in the forward or in the backward direction. 3. Evaluate the following expressions using suitable properties: (а) 128 + 23 + (-107) = (b) 12 +(-34) – (-68) = (c) (-26)+ 3 + (-7) =, A mercury thermometer records a temperature of 25°C at 9 p.m. If the temperature drops by 2°C per hour, what will be the temperature at 2 a.m. on the next day? In a quiz competition Anuj scores -10, 25, 32 and -3 and Vineeta scores -6, 31, 29 and -1, who scores more? Will changing the order of the scores change the result or not? 6 Suman and Kashish add and subtract -1 and -6. Suman.claims that they can add and subtract the integers in any order and answer would be the same. Kashish says that the answer obtained on subtracting the numbers, by changing their order would be different. Who is correct? Write the additive inverse of the following numbers: (c) -1 : 7. (a) -9: (d) -10 : (b) 8: Integers are not associative under subtraction. Do you agree? Verify your answer with an example. 8. 61 SHO
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