1. Sana and Fatima participated in an apple race. The race was conducted
in 6 parts. In the first part, Sana won by 10 seconds. In the second
part she lost by 1 minute, then
1. Sana and Fatima participated in an apple race. The race was conducted
in 6 parts. In the first part, Sana won by 10 seconds. In the second
part she lost by 1 minute, then won by 20 seconds in the third part
and lost by 25 seconds in the fourth part, she lost by 37 seconds in
the fifth part and won by 12 seconds in the last part. Who won the
race finally?
2. A green grocer had a profit of ₹47 on Monday, a loss of ₹12 on
Tuesday and loss of ₹ 8 on Wednesday. Find his net profit or loss in
3 days.
3. In a test, +3 marks are given for every correct answer and –1 mark
are given for every incorrect answer. Sona attempted all the questions
and scored +20 marks though she got 10 correct answers.
(i) How many incorrect answers has she attempted?
(ii) How many questions were given in the test?
4. In a true-false test containing 50 questions, a student is to be awarded
2 marks for every correct answer and –2 for every incorrect answer
and 0 for not supplying any answer. If Yash secured 94 marks in a
test, what are the possibilities of his marking correct or
wrong answer?
5. A multistorey building has 25 floors above the ground level each of height 5m. It also has 3 floors in the basement each of height 5m. A
lift in building moves at a rate of 1m/s. If a man starts from 50m
above the ground, how long will it take him to reach at 2nd floor of
basement?
6. Taking today as zero on the number line, if the day before yesterday
is 17 January, what is the date 3 days after tomorrow?
7. The highest point measured above sea level is the summit of
Mt. Everest which is 8,848m above sea level and the lowest point is
challenger Deep at the bottom of Mariana Trench which is 10911m
below sea level. What is the vertical distance between these two points?
8. You are at an elevation 380 m above sea level as you start a motor
ride. During the ride, your elevation changes by the following metres:
540 m, –268 m, 116 m, –152 m, 490 m, –844 m, 94 m. What is your
elevation relative to the sea level at the end of the ride?
9. 124.Evaluate the following, using distributive property.
(i) – 39 × 99
(ii) (– 85) × 43 + 43 × ( -15)
(iii) 53 × ( – 9) – ( – 109) × 53
(iv) 68 × (–17) + ( –68) × 3won by 20 seconds in the third part
and lost by 25 seconds in the fourth part, she lost by 37 seconds in
the fifth part and won by 12 seconds in the last part. Who won the
race finally?
2. A green grocer had a profit of ₹47 on Monday, a loss of ₹12 on
Tuesday and loss of ₹ 8 on Wednesday. Find his net profit or loss in
3 days.
3. In a test, +3 marks are given for every correct answer and –1 mark
are given for every incorrect answer. Sona attempted all the questions
and scored +20 marks though she got 10 correct answers.
(i) How many incorrect answers has she attempted?
(ii) How many questions were given in the test?
4. In a true-false test containing 50 questions, a student is to be awarded
2 marks for every correct answer and –2 for every incorrect answer
and 0 for not supplying any answer. If Yash secured 94 marks in a
test, what are the possibilities of his marking correct or
wrong answer?
5. A multistorey building has 25 floors above the ground level each of height 5m. It also has 3 floors in the basement each of height 5m. A
lift in building moves at a rate of 1m/s. If a man starts from 50m
above the ground, how long will it take him to reach at 2nd floor of
basement?
6. Taking today as zero on the number line, if the day before yesterday
is 17 January, what is the date 3 days after tomorrow?
7. The highest point measured above sea level is the summit of
Mt. Everest which is 8,848m above sea level and the lowest point is
challenger Deep at the bottom of Mariana Trench which is 10911m
below sea level. What is the vertical distance between these two points?
8. You are at an elevation 380 m above sea level as you start a motor
ride. During the ride, your elevation changes by the following metres:
540 m, –268 m, 116 m, –152 m, 490 m, –844 m, 94 m. What is your
elevation relative to the sea level at the end of the ride?
9. 124.Evaluate the following, using distributive property.
(i) – 39 × 99
(ii) (– 85) × 43 + 43 × ( -15)
(iii) 53 × ( – 9) – ( – 109) × 53
(iv) 68 × (–17) + ( –68) × 3
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