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1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50.
Điền Đ, Sa) 135 - 35 : 5 100 : 5 20 b) 246 + 54 x 2 246 + 108 354c) 135 - 35 : 5 135 - 7 128 d) 246 + 54 x 2 300 x 2 600
Đọc tiếp
Điền Đ, S
a) 135 - 35 : 5 = 100 : 5 = 20 
b) 246 + 54 x 2 = 246 + 108 = 354
c) 135 - 35 : 5 = 135 - 7= 128 
d) 246 + 54 x 2 = 300 x 2= 600
tính nhanh
a. 26 + 3 x 26 + 26 + 26 x 2
b. 25 - 27 + 29 - 31 + 33 - 35 + 37
các bạn giải hộ mình nha !
Đúng ghi Đ, sai ghi S
13 x 3 - 2 = 13
180 + 30 : 6 = 35
30 + 60 x 2 = 180
282 - 100 : 2 = 232
tìm phân số = nhau
26/39, 55/77, 39/65 ,25/35, , 51/85, 38/57
Tính theo mẫu :
32 dam x 3 = 96dam
25 m x 2 =
15 km x 4 =
34 cm x 6 =
96 cam : 3 = 32 cm.
36 hm : 3 =
70 km : 7 =
55 dm : 5 =
a .(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)b.(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112)c. (2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)d.(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)e(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + ........ + 10)f.58 – 58 x (6 + 54 – 60)g.32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32h.(1 + 2 + 3 + 4 + .... + 9) x (21 x 5 – 21 – 4 x21)i.(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ........+ 17 + 19)k.(2 + 4 + 6 + 8 + ... + 20) x (56 x 3 – 72 : 9 x 21)
Đọc tiếp
a .(18 – 9 x 2) x (2 + 4 + 6 + 8 + 10)
b.(7 x 8 – 56 ) : (2 + 4 + 6 + 8 + 112)
c. (2 + 125 + 6 + 145 + 112) x (42 – 6 x 7)
d.(12 x 6 – 12 x 4 – 12 x 2) x ( 347 + 125)
e(a x 7 + a x 8 – a x 15) : (1 + 2 + 3 + ........ + 10)
f.58 – 58 x (6 + 54 – 60)
g.32 + 63 x a x ( a x 1 – a : 1) + 32 x 8 + 32
h.(1 + 2 + 3 + 4 + .... + 9) x (21 x 5 – 21 – 4 x21)
i.(9 x 7 + 8 x 9 – 15 x 9) : (1 + 3 + 5 + 7 + ........+ 17 + 19)
k.(2 + 4 + 6 + 8 + ... + 20) x (56 x 3 – 72 : 9 x 21)
Tính36 x 4 50 x 3 22 x 6 35 x 4......... ........... .......... .................... ........... .......... .................... ........... .......... ...........46 : 2 96 : 3 60 : 3 88 : 4......... ........... .......... .................... ........... .......... .................... ........... .......... ...........
Đọc tiếp
Tính
36 x 4 50 x 3 22 x 6 35 x 4
......... ........... .......... ...........
......... ........... .......... ...........
......... ........... .......... ...........
46 : 2 96 : 3 60 : 3 88 : 4
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