Page 44 - Start Up Mathematics_7

4. The figure represents:

1
2
4
3
1
(a) 3 × = 2 (b) 4 × = (c) 3 × = (d) 3 × 5 = 1 1
3 3 3 4 4 12 4
3
5. John can read a novel in 17 hours. If he devotes 2 hours to reading every day, he would
7
finish the novel in:
(a) 5 days (b) 7 days (c) 9 days (d) 10 days
5
6. Smith bought a laptop from abroad in a special promotional drive for £ 45 which is of the
8
original price. The original marked price of the laptop is:
(a) £ 72 (b) £ 28 (c) £ 90 (d) £ 112
7. The fraction representing the shaded part of the
given square is:

2 2 2 1
(a) (b) (c) (d)
7 4 8 8

solve Mentally
True or False
1. The product of two proper fractions is greater than each of the fractions.
a c ad
2. Product of and is .
b d bc
3. To divide one fraction by another, we first multiply the fractions and then take its reciprocal.
4. No proper fraction is equal to a mixed fraction.

5. The word ‘of ’ written between two fractions refers to their product.
6. The multiplicative inverse of a fraction is the same as its reciprocal.

Fill in the Blanks
1
1. The multiplicative inverse of 3 is __________.
2
1
2. The speed of a car is 30 km per hour. The distance covered by the car in 5 hours is
2
__________________.
3. The product of a non-zero fraction and its reciprocal is always __________________.
4. If the price of 12 books is ` 189, then each book costs __________________.

1
5. The number of pieces each measuring 3 metres that can be cut from a rope measuring
4
1
45 metres is __________________.
2
3
6. There are _______________ minutes in th of 2 hours.
5
1 5 4
7. The value of the expression 2 – is _____________.
2 4 5
1
8. A fraction equivalent to having denominator 60 is ____________.
20

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