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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 3: giúp ek ạk gấp lw rùi 8hm=…m 7dam=-m 5dam=-m 1m=-dm 5m=…cm 200mm=-dm 900m=…hm 1km=…hm

Toán Lớp 3: giúp ek ạk gấp lw rùi
8hm=…m
7dam=….m
5dam=….m
1m=….dm
5m=…cm
200mm=….dm
900m=…hm
1km=…hm

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    8 hm = 8 xx 100 m = 800 m
    7 dam = 7 xx 10 m = 70 m
    5 dam = 5 xx 10 m = 50 m
    1 m = 1 xx 10 dm = 10 dm
    5 m = 5 xx 100 cm = 500 cm
    200  mm = 200 : 100  dm = 2 dm
    900 m = 900 : 100 hm = 9 hm
    1 km = 1 xx 10 hm = 10 hm

  2. 8 hm=800
    7dam=70m
    5dam=50m
    1m=10dm
    5m=500cm
    200mm=2dm
    900m=9hm
    1km=10hm

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222-9+11+12:2*14+14 = ? ( )