7th Mathematics Weekly Test - 2 (Number System)

St. Britto Hr. Sec. School - Madurai

7th Mathematics Weekly Test - 2 (Number System)-Aug 2020

Time : 1.00 Hours

Part - A

Generic 2 - Answer All Question

Find the amount that is left in the student’s bank account, if he has made the following transaction in a month. His initial balance is Rs. 690
(i) Deposit(+) of Rs.485
(ii) Withdrawal(-) of Rs.500
(iii) Withdrawal(-) of Rs. 350
(iv) Deposit(+) of Rs. 89
(v) If another Rs. 300 was withdrawn, what would the balance be?

An atom can contain protons which have a positive charge (+) and electrons which have a negative charge (-). When an electron and a proton pair up, they become neutral (0) and cancel the charge out. Now, Determine the net charge
(i) 5 electrons and 3 protons \(\rightarrow \) -5+=-2 that is electrons u229du229d
(ii) 6 Protons and 6 electrons \(\rightarrow \)
(iii) 9 protons and 12 electrons \(\rightarrow \)
(iv) 4 protons and 8 electrons \(\rightarrow \)
(v) 7 protons and 6 electrons \(\rightarrow \)

Kamatchi, a fruit vendor sells 30 apples and 50 pomegranates. If she makes a profit of Rs.8 per apple and loss Rs. 5 per pomegranate, what will be her overall profit(or)loss?

Find the product of
(i) (-35)×22 (ii) (-10)×12×(-9) (iii) (−9)×(−8)×(−7)×(-6)
(iv) (-25)×0×45×90 (v) (-2)×(+50)×(-25)×4

During a drought, the water level in a dam fell 3 inches per week for 6 consecutive weeks. What was the change in the water level in the dam at the end of this period?

One night in Kashmir, the temperature is -5^oC,Next day the temperature is 9^oC What is the increase in temperature?

Find the values of the following.
(i)(−75)÷5
(II)(−100)÷(−20)
(III)45÷(-9)
(IV)(-82)÷82

In a quiz competition, Team
A scored +30,–20, 0 and team B scored –20, 0, +30 in three successive rounds. Which team will win? Can we say that we can add integers in any order?

Part - B

Generic 3 - Answer All Question

Add: (i) (–70) and (–12) (ii) 103 and 39.

(i) Are 120 + 51 and 51 + 120 equal?
(ii) Are(-5)+[(-4)+(-3)] and [(-5)+(-4)]+(-3)equal?

Sita saved ` 225.00 and she has spent ` 400 on credit basis for the purchase of stationery. Find her due amount.

A fruit seller sold 5kg of mangoes at a profit of ₹ 15 per kg and 3kg of apples at a loss of ₹ 30 per kg. Find whether it is a profit or loss.

Find the value of :
(i) (-35)\(\times \) (-11) (ii) 96\(\times \)(-20) (iii) (-5)\(\times \)12 (iv) 15\(\times \) 5 (v) 999\(\times \)0

Mention the property for the following equations:
(i) (-45) +(-12) =-57 (ii) (-15) +7=(7)+(-15)
(iii) −10+3=−7 (iv) (-7)+(-5)=(-5)+(-7)
(v) (-7) +[(-4) +(-3)]=[(-7)+(-4)]+(-3) (vi) 0+(-7245)=-7245

Divide: (i) (−85) by 5 (ii) (–250) by (–25) (iii) 120 by (–6) (iv) 182 by (–2)

A shopkeeper earns a profit of ₹ 5 by selling one notebook and incurs a loss of ₹ 2 per pen while selling of his old stock. In a particular day he earns neither profit nor loss. If he sold 20 notebooks, how many pens did he sell?

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7th Mathematics Weekly Test - 2 (Number System)

St. Britto Hr. Sec. School - Madurai

7th Mathematics Weekly Test - 2 (Number System)-Aug 2020

Part - A

Generic 2 - Answer All Question

Kamatchi, a fruit vendor sells 30 apples and 50 pomegranates. If she makes a profit of Rs.8 per apple and loss Rs. 5 per pomegranate, what will be her overall profit(or)loss?

Find the product of (i) (-35)×22 (ii) (-10)×12×(-9) (iii) (−9)×(−8)×(−7)×(-6) (iv) (-25)×0×45×90 (v) (-2)×(+50)×(-25)×4

During a drought, the water level in a dam fell 3 inches per week for 6 consecutive weeks. What was the change in the water level in the dam at the end of this period?

One night in Kashmir, the temperature is -5oC,Next day the temperature is 9oC What is the increase in temperature?

Find the values of the following. (i)(−75)÷5 (II)(−100)÷(−20) (III)45÷(-9) (IV)(-82)÷82

In a quiz competition, Team A scored +30,–20, 0 and team B scored –20, 0, +30 in three successive rounds. Which team will win? Can we say that we can add integers in any order?

Part - B

Generic 3 - Answer All Question

Add: (i) (–70) and (–12) (ii) 103 and 39.

(i) Are 120 + 51 and 51 + 120 equal? (ii) Are(-5)+[(-4)+(-3)] and [(-5)+(-4)]+(-3)equal?

Sita saved ` 225.00 and she has spent ` 400 on credit basis for the purchase of stationery. Find her due amount.

A fruit seller sold 5kg of mangoes at a profit of ₹ 15 per kg and 3kg of apples at a loss of ₹ 30 per kg. Find whether it is a profit or loss.

Find the value of : (i) (-35)\(\times \) (-11) (ii) 96\(\times \)(-20) (iii) (-5)\(\times \)12 (iv) 15\(\times \) 5 (v) 999\(\times \)0

Mention the property for the following equations: (i) (-45) +(-12) =-57 (ii) (-15) +7=(7)+(-15) (iii) −10+3=−7 (iv) (-7)+(-5)=(-5)+(-7) (v) (-7) +[(-4) +(-3)]=[(-7)+(-4)]+(-3) (vi) 0+(-7245)=-7245

Divide: (i) (−85) by 5 (ii) (–250) by (–25) (iii) 120 by (–6) (iv) 182 by (–2)

A shopkeeper earns a profit of ₹ 5 by selling one notebook and incurs a loss of ₹ 2 per pen while selling of his old stock. In a particular day he earns neither profit nor loss. If he sold 20 notebooks, how many pens did he sell?

Comment

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Find the product of
(i) (-35)×22 (ii) (-10)×12×(-9) (iii) (−9)×(−8)×(−7)×(-6)
(iv) (-25)×0×45×90 (v) (-2)×(+50)×(-25)×4

One night in Kashmir, the temperature is -5^oC,Next day the temperature is 9^oC What is the increase in temperature?

Find the values of the following.
(i)(−75)÷5
(II)(−100)÷(−20)
(III)45÷(-9)
(IV)(-82)÷82

In a quiz competition, Team
A scored +30,–20, 0 and team B scored –20, 0, +30 in three successive rounds. Which team will win? Can we say that we can add integers in any order?

(i) Are 120 + 51 and 51 + 120 equal?
(ii) Are(-5)+[(-4)+(-3)] and [(-5)+(-4)]+(-3)equal?

Find the value of :
(i) (-35)\(\times \) (-11) (ii) 96\(\times \)(-20) (iii) (-5)\(\times \)12 (iv) 15\(\times \) 5 (v) 999\(\times \)0

Mention the property for the following equations:
(i) (-45) +(-12) =-57 (ii) (-15) +7=(7)+(-15)
(iii) −10+3=−7 (iv) (-7)+(-5)=(-5)+(-7)
(v) (-7) +[(-4) +(-3)]=[(-7)+(-4)]+(-3) (vi) 0+(-7245)=-7245