a) \(\text{13 x 58 x 4 + 32 x 26 x 2 + 52 x 10 }\)
\(\text{=(13 x 4 ) x 58 + 32 x 13 x 2 x 2 + 13 x 4 x 10}\)
\(\text{= ( 13 x 4 ) x 58 + 32 x ( 13 x 2 x 2 ) + ( 13 x 4 ) x 10 }\)
\(\text{= 52 x 58 + 32 x 52 + 52 x 10}\)
\(\text{=52 x ( 58 + 32 + 10 )}\)
\(\text{=52 x 100 = 5200}\)
b) \(\text{14 x 35 x 5 + 10 x 25 x 7 + 20 x 70 x 2}\)
\(\text{= ( 14 x 5 ) x 35 + (10 x 7 ) x 25 + 20 x 70 x 2 }\)
\(\text{= 70 x 35 + 70 x 25 + 20 x 2 x 70 }\)
\(\text{= 70 x ( 35 + 25 + 40 )}\)
\(\text{= 70 x 100 = 7000 }\)
e) \(\text{5.3.37.4+5.24.21+21.5.12}\)
\(\text{= 5.(3.37.4+24.21+21.12)}\)
\(\text{= 5.1200}\)
\(=6000\)
a) \(13.58.4+32.26.2+52.10\)
\(=52.58+32.52+52.10\)
\(=52.\left(58+32+10\right)\)
\(=52.100=5200\)
b) \(14.35.5+10.25.7+20.70\)
\(=7.5.35.2+10.7.25+20.70\)
\(=35.70+70.25+20.70\)
\(=70\left(35+25+20\right)\)
\(=70.80=5600\)
c) \(...=15\left(27+18+6+23+12\right)\)
\(=15\left(27+23+18+12+6\right)\)
\(=15\left(50+30+6\right)=15.86=1290\)
d) \(...=53\left(51+4+49+96+1\right)\)
\(=53\left(51+49+4+96+1\right)\)
\(=53\left(100+100+1\right)=53.201=10653\)
e) \(15.37.4+120.21+21.5.12\)
\(=15.4.37+60.2.21+21.60\)
\(=60.37+60.42+21.60\)
\(=60.\left(37+42+21\right)=60.100=6000\)
a)
b)
=15 . (51 + 35)
d) 53 . (51 +4) + 53.(49 + 96 ) + 53
= 53 . ((51 + 4 ) + (49 + 96 ) + 1)
= 53 . (55 + 145 + 1)
= 53 . 201
= 10653
e)
