67 + 33 =?
23 + 77 =?
21 + 99 =?
tinh nhanh
37+23+67+33+22+33+77+88+100+1012
Tính nhanh: -67.(-33+77)+(-67-77).33
Cần gấppp=))
\(=\left(-67\right).\left(-33\right)-67.77+\left(-67\right).33-77.33\)
\(=\left[\left(-67\right).\left(-33\right)+\left(-67\right).33\right]-66.77-77.33\)
\(=-77\left(66+33\right)=-77.99=-7623\)
11+89 22+78 33+67 44+56 55+45 66+34 77+23 88+12 99+1
nhanh nhanh tui tick
11 + 89 = 100
22 + 78 = 100
33 + 67 = 100
44 + 56 = 100
55 + 45 = 100
66 + 34 = 100
77 + 23 = 100
88 + 23 = 100
99 + 1 = 100
11+89 22+78 33+67 44+56 55+45 66+34 77+23 88+12 99+1
nhanh nhanh tui tick
11+89=100
22+78=100
33+67=100
44+56=100
55+45=100
66+34=100
77+23=100
88+12=100
99+1=100
11+89 22+78 33+67 44+56 55+45 66+34 77+23 88+12 99+1
nhanh nhanh tui tick
11+89=100 66+34=100
22+78=100 77+23=100
33+67=100 88+12=100
44+56=100 99+1=100
55+45=100
11+89 = 100 ; 22+ 78 = 100 ; 33 + 67= 100 ; 44 + 56 = 100 ; 66 + 34 = 100 ; 55 + 45 = 100 ; 66 + 34 = 100 ; 77 + 23 = 100
88 + 12 = 100 ; 99 + 1 = 100
Chúc bạn học tốt !
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 * 51 * 52 * 53 * 54 * 55 * 56 * 57 * 58 * 59 * 60 * 61 * 62 * 63 * 64 * 65 * 66 * 67 * 68 * 69 * 70 * 71 * 72 * 73 * 74 * 75 * 76 * 77 * 78 * 79 * 80 * 81 * 82 * 83 * 84 * 85 * 86 * 87 * 88 * 89 * 90 * 91 * 92 * 93 * 94 * 95 * 96 * 97 * 98 * 99 * 100 bằng bao nhiêu?
56-6=
67+33=
79+21=
91+99=
ai tick mk mk tick lại
56-6=50
67+33=100
79+21=100
91+99=190
ai t ick mk mk t ick lại
a) 23 + (-77) + (-23) + 77 =
[23 + (-23)] + [(-77) + 77]
= ………
b) (-2 020) + 2 021 + 21 + (-22)
=[(-2 020) + 2 021] + [21 + (-22)]
= ………+ ……..
= 0.
a) 23 + (-77) + (-23) + 77 =
[23 + (-23)] + [(-77) + 77]
= …0+0=0……
b) (-2 020) + 2 021 + 21 + (-22)
=[(-2 020) + 2 021] + [21 + (-22)]
= …1……+ (-1)……..
= 0.
a) 23 + (-77) + (-23) + 77 =
[23 + (-23)] + [(-77) + 77]
= …0+0=0……
b) (-2 020) + 2 021 + 21 + (-22)
=[(-2 020) + 2 021] + [21 + (-22)]
= …1……+ (-1)……..
= 0.
tính hợp lý (nếu được)
23 . 49 +77 .177 + 23 .61-77 . 67
23.49+77.177+23.61-77.67
=23.(49+61)+77.(177-67)
=23.110+77.110
=110.(23+77)
=110.100=11000
k nha
23 * 49 + 77*177 + 23*61 - 77* 67 = 23(49+ 61) + 77 (177 - 67) = 23* 110 + 77* 110 = (23+ 77) * 110 = 100 * 110 = 11 000