Respuesta:
1)A)69.7
Resolución:
69.7=60.7+9.7
60.7=60.5+60.2
60.7=60.5+120
60.5=60.10/2
60.5=600/2
60.5=300
60.7=300+120
60.7=420
69.7=420+9.7
9.7=9.5+9.2
9.7=9.5+18
9.5=9.10/2
9.5=90/2
9.5=45
9.7=45+18
9.7=63
69.7=420+63
69.7=483
B)749.5
749.5=700.5+40.5+9.5
700.5=700.10/2
700.5=7000/2
700.5=3500
749.5=3500+40.5+9.5
40.5=40.10/2
40.5=400/2
40.5=200
749.5=3500+200+9.5
749.5=3700+9.5
749.5=3700+45
749.5=3745
1)a)78+78+78+78
78+78+78+78=(70+70+70+70)+(8+8+8+8)
78+78+78+78=280+32
78+78+78+78=312
B)97+97+97+97
97+97+97+97+97+97=(90+90+90+90+90+90)+(7+7+7+7+7+7)
97+97+97+97=540+42
97+97+97+97=582
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Respuesta:
1)A)69.7
Resolución:
69.7=60.7+9.7
60.7=60.5+60.2
60.7=60.5+120
60.5=60.10/2
60.5=600/2
60.5=300
60.7=300+120
60.7=420
69.7=420+9.7
9.7=9.5+9.2
9.7=9.5+18
9.5=9.10/2
9.5=90/2
9.5=45
9.7=45+18
9.7=63
69.7=420+63
69.7=483
B)749.5
Resolución:
749.5=700.5+40.5+9.5
700.5=700.10/2
700.5=7000/2
700.5=3500
749.5=3500+40.5+9.5
40.5=40.10/2
40.5=400/2
40.5=200
749.5=3500+200+9.5
749.5=3700+9.5
9.5=9.10/2
9.5=90/2
9.5=45
749.5=3700+45
749.5=3745
1)a)78+78+78+78
Resolución:
78+78+78+78=(70+70+70+70)+(8+8+8+8)
78+78+78+78=280+32
78+78+78+78=312
B)97+97+97+97
Resolución:
97+97+97+97+97+97=(90+90+90+90+90+90)+(7+7+7+7+7+7)
97+97+97+97=540+42
97+97+97+97=582