Question

Find the Product of the following using suitable properties.
1. (-98) X (-9) + 98
2. (-237) X (-99) + 237
3. (-563) X (-999) + 563
4. 7 X (50-2)
5. (-41) X 102
6. (-84) X 99
7. (-24) X 998
8. 8 X 53 X (-125)
9. 8 X 56739 X (-125)
10. 15 X (-25) X (-4) X (-10)
11. (-34) X 1002
12. 23 X (-25) X (-4) X (-10)

Answer 1

1. (-98)(1+9)=(-98)(10)=-980

2. 237(-1-99)=237(-100)=-23700

3. 563(-1-999)=563(-1000)=-563000

4. 350-14=336

5. -41(100+2)=-4100-82=-4182

6. -84(100-1)=-8400+84= -8316

7. -24(1000-2)=-24000+48=-24952

8.