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2,4 ton - 1 ton = 1,4 ton
18. 1jam 20menit=80menit
4x80=320 menit
3x30=90menit
320+90=410menit
410:60=6jam 50menit
08.00+06.50=14.50 (b)
19.1lusin=12buah
1gros=144buah
9x12=108+20=128buah
1,5x144=216buah
128+216=344buah (a)
20. 1ca=10.000cm2
1dm2=100cm2
biru=0,42x10.000=4200cm2
merah=23x100=2300cm2
4200-2300=6500-150=6350cm2
kalau nggk ngerti sama jawaban ak komen aja