Viết số thập phân thích hợp  5cm = ...........dm  4mm = ........m . 27mm =........m 322mm=........m 49m=..........km 6dag=............kg 9g= .......kg 45g=.............kg. 500g=.........kg  87kg=.........tạ
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{
"content1": {
"5cm = ...........dm": "5cm = 0.5dm"
"4mm = ........m": "4mm= 0.004m"
"27mm =........m": "27mm = 0.027m"
"322mm=........m": "322mm= 0.322m"
"49m=..........km": "49m= 0.049km"
"6dag=............kg": "6dag= 0.006kg"
"9g= .......kg": "9g= 0.009kg"
"45g=.............kg": "45g= 0.045kg"
"500g=.........kg": "500g= 0.5kg"
"87kg=.........tạ": "87kg= 0.087tạ"
},
"content2": {
"5cm = ...........dm": "5cm = 0.05dm"
"4mm = ........m": "4mm= 0.004m"
"27mm =........m": "27mm = 0.027m"
"322mm=........m": "322mm= 0.322m"
"49m=..........km": "49m= 0.049km"
"6dag=............kg": "6dag= 0.06kg"
"9g= .......kg": "9g= 0.009kg"
"45g=.............kg": "45g= 0.045kg"
"500g=.........kg": "500g= 0.5kg"
"87kg=.........tạ": "87kg= 0.087tạ"
},
"content3": {
"5cm = ...........dm": "5cm = 0.5dm"
"4mm = ........m": "4mm= 0.004m"
"27mm =........m": "27mm = 0.027m"
"322mm=........m": "322mm= 0.322m"
"49m=..........km": "49m= 0.049km"
"6dag=............kg": "6dag= 0.006kg"
"9g= .......kg": "9g= 0.009kg"
"45g=.............kg": "45g= 0.045kg"
"500g=.........kg": "500g= 0.5kg"
"87kg=.........tạ": "87kg= 0.087tạ"
}
}