Last updated on September 20th, 2023 at 02:49 pm
1000 x 291
291000 (d) 625 x 279 x 16
Solution –
[625 x 16 ] x 279
10000 x 279
2790000 (e) 285 x 5 x 60
Solution –
284 x [5 x 60]
284 x 300
85500 (f) 125 x 40 x 8 x 25
Solution –
[125 x 8] x [40 x 25]
1000 x 1000
1000000
- Find the value of the following:
(a) 297 x 17 + 297 x 3
Solution:-
- 297 x [17+3]
- 297 x 20
- 5940
(b) 54279 x 92 + 8 x 54279
Solution:-
- 54279 x [92+8]
- 54279 x 100
- 5427900
(c) 81265 x 169 – 81265 x 69
Solution:-
- 81265 x [169-69]
- 81265 x 100
- 8126500
(d) 3845 x 5 x 782 + 769 x 25 x 218
Solution:-
- 3845 x 5 x 782 + 769 x 5 x 5 x 218
- 3845 x 5 x 782 + [769 x 5] x 5 x 218
- 3845 x 5 x 782 + 3845 x 5 x 218
- 3845 x 5 x [782+218]
- [3845 x 5] x 1000
- 19225 x 1000
- 19225000
Find the product using suitable properties.
(a) 738 x 103
Solution:- [distributive]
- 738 x [100 + 3 ]
- 738 x100 + 738 x 3
- 73800 + 2214
- 76014
(b) 854 x 102
Solution:- [distributive]
- 854 x [100 + 2]
- 854 x 100 + 854 x 2
- 85400 + 1708
- 87108
(c) 258 x 1008
Solution:- [distributive]
- 258 x [1000 + 8 ]
- 258 x 1000 + 258 x 8
- 258000 + 2064
- 260064
(d) 1005 x 168
Solution:- [distributive]
- [1000 + 5 ] x 168
- 1000 x 168 + 5 x 168
- 168000 + 840
- 168840
Note :- The distributive property is a multiplication property that is applied in both addition and subtraction.
- A taxi-driver, filled his car petrol tank with 40 liters of petrol on Monday. The next day, he filled the tank with 50 liters of petrol. If the petrol costs 44 per liter, how much did he spend in all on petrol?
Solution :-
- On Monday Petrol filled – 40 liters.
- On Next day – 50 liters
- Total petrol = 40+50 = 90
- Price for 1-liter petrol is 44 so the price for 90-liter petrol will be
- 44 x 90 = 3960.00
- So, he spends 3960 Rs. On petrol.
- A vendor supplies 32 liters of milk to a hotel in a morning and 68 liters of milk in the evening. If the milk costs ` 15 per liter, how much money is due to the vendor per day?
Solution:-
- Milk in Morning = 32 liters
- Milk in evening = 68 liters
- Total milk per day = 32+68 = 100
- Price of 1 liter of milk = 15
- 100 liter milk price = 100 x 15 = 1500
- Money due to the vendor per day is rs 1500
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