Question

Thực hiện phép tính ( đơn vị cm )

a) 3m40cm + 4m24cm - 5m69cm =

b) 72m6cm - 56m50cm + 7m44cm =

c) 8m27dm + 3m35cm + 3dm65cm =

d) 98m20cm x 2 + 23m30cm x 2 =

e) 18m40cm x 4 + 80m5dm x 8 =

f) 87m23dm : 2 =

g) 9m8dm7cm : 3 =

h) 90dm30cm x 10 =

i) 19dm8cm : 3 =

j) 36m8dm7cm : 3 =

Answer 1

a) 3 m 40 cm + 4 m 24 cm - 5 m 69 cm = 340 cm + 424 cm - 569 cm = 195 cm

b) 72 m 6 cm - 56 m 50 cm + 7 m 44  cm = 7206 cm - 5650 cm + 744 cm = 2300 cm

c) 8 m 27 dm + 3 m 35 cm + 3 m 65 cm = 1070 cm + 335 cm + 365 cm = 1770 cm

d) 98 m 20 cm x 2 + 23 m 30 cm x 2 = 9820 cm x 2 + 2330 cm x 2 = 19640 cm + 4660 cm = 24300 cm

e) 18 m 40 cm x 4 + 80 m 5 dm x 8 = 1840 cm x 4 + 8050 cm x 8 = 7360 cm + 64400 cm = 71760 cm

f) 87 m 23 dm : 2 = 8930 cm : 2 = 4465 cm

g) 9 m 8dm 7 cm : 3 = 987 cm : 3 = 329 cm

h) 90 dm 30 cm x 10 = 930 cm x 10 = 9300 cm

i) 19 dm 8 cm : 3 = 198 cm : 3 = 66 cm

j) 36 m 8 dm 7 cm : 3 = 3687 cm : 3 = 1229 cm

Answer 2

a) 3 m 40 cm + 4 m 24 cm - 5 m 69 cm = 340 cm + 424 cm - 569 cm = 195 cm

b) 72 m 6 cm - 56 m 50 cm + 7 m 44  cm = 7206 cm - 5650 cm + 744 cm = 2300 cm

c) 8 m 27 dm + 3 m 35 cm + 3 m 65 cm = 1070 cm + 335 cm + 365 cm = 1770 cm

d) 98 m 20 cm x 2 + 23 m 30 cm x 2 = 9820 cm x 2 + 2330 cm x 2 = 19640 cm + 4660 cm = 24300 cm

e) 18 m 40 cm x 4 + 80 m 5 dm x 8 = 1840 cm x 4 + 8050 cm x 8 = 7360 cm + 64400 cm = 71760 cm

f) 87 m 23 dm : 2 = 8930 cm : 2 = 4465 cm

g) 9 m 8dm 7 cm : 3 = 987 cm : 3 = 329 cm

h) 90 dm 30 cm x 10 = 930 cm x 10 = 9300 cm

i) 19 dm 8 cm : 3 = 198 cm : 3 = 66 cm

j) 36 m 8 dm 7 cm : 3 = 3687 cm : 3 = 1229 cm

Học tốt hem:)))