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48/41 + 45/27 + 34/28 + 37/23 - 18/27 - 6/28 - 7/41 - 14/23
= (48/41 - 7/41) + (45/27 - 18/27) + (34/28 - 6/28) + (37/23 - 14/23)
= 1 + 1 + 1 + 1
= 4
62 - 52 + 37 + 28 - 38 + 63
= ( 62 - 52 ) + ( 37 + 63 ) + ( 28 - 38 )
= 10 + 100 + - 10
= 110 + - 10
= 100
\(62-52+37+28-38+63\)
= \(\left(62+28\right)-\left(52+38\right)+\left(37+63\right)\)
= \(90-90+100\)
= \(100\)
62 - 52 + 37 + 28 -38 +63 = (62 + 28 ) +(37+63) - 52 - 38
= 90 + 100 -90
=100
62 - 52 + 37 + 28 - 38 + 63 = (62 - 52) + 28 - 38 + (37 + 63)
=38 - 38 + 100
= 0 + 100 = 100
\(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
------------
\(172\times47+86\times8-34\times4\)
\(=172\times47+172\times4-34\times4\)
\(=172\times\left(47+4\right)-34\times4\)
\(=172\times51-34\times4\)
\(=172\times3\times17-17\times2\times4\)
\(=17\times\left(172\times3-2\times4\right)\)
\(=17\times\left(516-8\right)\)
\(=17\times508\)
\(=8636\)
------------
\(35\times215-35\times200-175\)
\(=35\times215-35\times200-35\times5\)
\(=35\times\left(215-200-5\right)\)
\(=35\times10\)
\(=350\)
------------
\(48\times56+28\times104\)
\(=48\times2\times28+28\times104\)
\(=28\times\left(48\times2+104\right)\)
\(=28\times200\)
\(=5600\)
52 = 37
7 = 5 + 2
3 = 5 - 2
41 = 4 + 1 = 5
4 - 1 = 3
35 = 28
5 + 3= 8
5 - 3 = 2
25 = x
2+ 5 = 7
5 - 2 = 3
x = 37
a) \(37\times46+37\times51+111\)
\(=37\times46+37\times51+37\times3\)
\(=37\times\left(46+51+3\right)\)
\(=37\times100\)
\(=3700\)
b) \(35\times215-35\times210-175\)
\(=35\times215-35\times210-35\times5\)
\(=35\times\left(215-210-5\right)\)
\(=35\times0\)
\(=0\)
c) \(172\times47+86\times8-34\times4\)
\(=4\times\left(43\times47+86\times2-34\right)\)
\(=4\times\left(2021+172-34\right)\)
\(=4\times2159\)
\(=8636\)
d) \(48\times56+28\times104\)
\(=48\times56+56\times52\)
\(=56\times\left(48+52\right)\)
\(=56\times100\)
\(=5600\)
28.37+37:28+37
=28.37+37.\(\frac{1}{2^8}\)+37
=(28+\(\frac{1}{2^8}\)+1).37
=\(\approx\)562067,543