m) 1159 : 125 - 159 : 125
= ( 1159 - 159 ) : 125
= 1000 : 125
= 8
A) 198 + 232 - 98 - 32
= ( 198 - 98 ) + (232 - 32)
= 100 + 200
= 300
b) 567 + 538 - 326 + 62
= (538 + 62) + ( 567 - 326)
= 600 + 241
= 841
c) 567 - 32 - 68
= 567 - ( 32 + 68)
= 567 - 100
= 467
m)\(1159:125-159:125=\left(1159-159\right):125=1000:125=8\)
a)\(198+232-98-32=\left(198-98\right)+\left(232-32\right)=100+200=300\)
b)\(567+538-326+62=567+\left(538+62\right)-326=567+600-326=841\)c)
\(567-32-68=535-68=467\)
a.
\(198+232-98-32\\ =\left(198-98\right)+\left(232-32\right)\\ =100+200\\ =300\)
b.
\(567+538-326+62\\ =\left(567-326\right)+\left(538+62\right)\\ =241+600\\ =841\)
c.
\(567-32-68\\ =535-68\\ =467\)
d.
\(2391-147-25.3\\ =2391-147-75\\ =2169\)
e.
\(91.25-91.13-91.12\\ =91.\left(25-13-12\right)\\ =0\)
f.
\(17-8+47.12-27.9-27.11\\ =\left(9+564\right)-27.\left(9-11\right)\\ =573--54\\ =627\)
g.
\(24.42-35.24-24.7\\ =24.\left(42-35-7\right)\\ =0\)
h.
\(42.13-22.5+42.7-15.22\\ =\left(42.13+42.7\right)+\left(-22.5-15.22\right)\\ =42.\left(13+7\right)+22.\left(-5-15\right)\\ =840-440\\ =400\)
k.
\(125:4-25:4\\ =\left(125-25\right):4\\ =100:4\\ =25\)
m.
\(1159:125-159:125\\ =\left(1159-159\right):125\\ =8\)
a.198+232−98−32=(198−98)+(232−32)=100+200=300
b.567+538−326+62=(567−326)+(538+62)=241+600=841
c.567−32−68=535−68=467
d.2391−147−25.3=2391−147−75=2169
e.91.25−91.13−91.12=91.(25−13−12)=0
f.17−8+47.12−27.9−27.11=(9+564)−27.(9−11)=573−−54=627
g.24.42−35.24−24.7=24.(42−35−7)=0
h.42.13−22.5+42.7−15.22=(42.13+42.7)+(−22.5−15.22)=42.(13+7)+22.(−5−15)=840−440=400
k.125:4−25:4=(125−25):4=100:4=25
m.1159:125−159:125=(1159−159):125
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