Discover answers to your most pressing questions at Westonci.ca, the ultimate Q&A platform that connects you with expert solutions. Our platform connects you with professionals ready to provide precise answers to all your questions in various areas of expertise. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

can u pl help me with these question in the pic and show how to wrok them out plzz

Can U Pl Help Me With These Question In The Pic And Show How To Wrok Them Out Plzz class=

Sagot :

18) 
The Last case is 252 because 28 * 9 = 252. 
Second Case is 9 because 8*9 = 72, and 252 - 72 = 180, then you divide 180 over 20, and you get 9.
So, 28 * 9 = 20 * 9 + 8 * 9 = 252

19)
in Math, when they say "of", it means you need to multiply, so you get:
[tex] \frac{4}{7} * 98[/tex]
do it on the calculator and you get 56.

20)
To add fractions, they need to have the same denominator. Since here they got the same (10), you get:
[tex] \frac{6}{10} + \frac{1}{10} + \frac{4}{10} [/tex]
[tex] \frac{6+1+4}{10} [/tex]
[tex] \frac{11}{10} [/tex]

Hope this Helps! :D
18) [tex]\sf 28 * 9 = 20 * 9 + 8 * 9 = 252[/tex]

19) [tex]\sf \frac{4}{7} * 98[/tex]

[tex]\sf remember ~ that~98 ~can~also~be~written~as ~ \frac{98}{1} [/tex]

[tex]\sf \frac{4}{7} * \frac{98}{1} = \frac{4~*~98}{7~*~1} = \frac{392}{7} = 56[/tex]

20) [tex]\sf \frac{6}{10} + \frac{1}{10} + \frac{4}{10} = \frac{6~+~1~+~4}{10} = \frac{11}{10} = 1 \frac{1}{10} [/tex]