Tính nhanh:
53 (51 + 4) + 53 (49 + 96) + 53
Những câu hỏi liên quan
1 tính nhanh c) 53(51 + 4 ) 53 ( 49 + 96) + 53 d) 3+6+9+12+....+123+126
c: =53*55+53*145+53
=53*201
=10653
d: Số số hạng là (126-3):3+1=42(số)
Tổng là (126+3)*42/2=2709
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Tính nhanh
13.58.4 + 32.26.2+52.10
15.34.4+120.21+21.5.12
14.35.5+10.25.7+20.70
24.( 15+49)+12.(50+42)
53.(51+4)+53.(49+96)+53
42.(15+96)+6.(25+4).7
45.(13+78)+8.(53+25).2
cọu lên gg í <<:
tính nhanh nhé
7) 53(51+4)+53(49+96)+53
8)42(15+96)+6(25+4).7
9) 45(13+78)+9(87+22).5
10) 16(27+75)+8(53+25).2
7)
53.(51+4)+53.(49+96)+53
=53.55+53.145+53
=53.(55+145+1)
=53.201
=10653
8)
42.(15+96)+6.(25+4).7
=42.111+(6.7).29
=42.111+42.29
=42.(111+29)
=42.140
=5880
9)
45.(13+78)+9.(87+22).5
=45.91+(9.5).109
=45.91+45.109
=45.(91+109)
=45.200
=9000
10)
16.(27+75)+8.(53+25).2
=16.102+(8.2).78
=16.102+16.78
=16.(102+78)
=16.180
=2880
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7)
53.(51+4)+53.(49+96)+53
=53.55+53.145+53
=53.(55+145+1)
=53.201
=10653
8)
42.(15+96)+6.(25+4).7
=42.111+(6.7).29
=42.111+42.29
=42.(111+29)
=42.140
=5880
9)
45.(13+78)+9.(87+22).5
=45.91+(9.5).109
=45.91+45.109
=45.(91+109)
=45.200
=9000
10)
16.(27+75)+8.(53+25).2
=16.102+(8.2).78
=16.102+16.78
=16.(102+78)
=16.180
=2880
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Tính nhanh:
3) 124 + (-52) . 124 + (-124 ) . (-47)
4) 53. (51 + 4) + 53. ( 49+96) + 53
3) 124 + (-52) . 124 + (-124 ) . (-47)
= 124 + (-52) . 124 + 124 . 47
= 124 \(\left[\left(-52\right)+1+47\right]\)
= 124.(-3)
= -372
4) 53. (51 + 4) + 53. ( 49+96) + 53
= 53 . 55 + 53 . 145 + 53
= 53(55+145) + 53
= 53 . 200 + 53
= 10600 +53
= 10653
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53. ( 51 + 4 ) + 53. ( 49 + 96 ) + 53 =?
53.51+51.4+ 53.49+ 53.96+53
= 53.(51+49)+ 53.( 96+4)+ 53
= 53.100+ 53. 100 + 53
= 5300+5300+53
=10600+53
=10653
****
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53.{51+4}+53.{49+96}+53
\(53\cdot\left(51+4\right)+53\cdot\left(49+96\right)+53\)
=\(53\cdot55+53\cdot145+53\cdot1\)
=\(53\cdot\left(55+145+1\right)\)
=\(53\cdot201\)
=10653
nếu Đ thì k cho mk nhá
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bài 1: tính nhanh
14.35.5+10.25.7+20.70
15.(27+18+6) + 15.(23+12)
24.15+49) + 12.(50+42 )
10.(81+19) + 100 + 50 .(91+9)
53.(51 +4) +53 .( 49+96) 53
nói chung là lên gg mà sợt;vvv
42. 53 + 47. 156 - 47. 114
53. ( 51 + 4 ) + 53. ( 49 + 96 ) + 53
42. ( 15 + 96 ) + 6. ( 25 +4 ). 7
1, 42 x 53 + 47 x 156 - 47 x 114
= 42 x 53 + 47 x ( 156 - 114 )
= 42 x 53 + 47 x 42
= 42 x ( 53 + 47 )
= 42 x 100
= 4200
2, 53 x ( 51 + 4 ) + 53 x ( 49 + 96 ) + 53
= 53 x 51 + 53 x 4 + 53 x 49 + 53 x 96
= 53 x ( 51 + 49 ) + 53 x ( 96 + 4 ) + 53
= 53 x 100 + 53 x 100 + 53
= 5300 + 5300 + 53
= 10653
3, 42 x ( 15 + 96 ) + 6 x ( 25 + 4 ) x 7
= 42 x 15 + 42 x 96 + 42 x 25 + 42 x 4
= 42 x ( 15 + 25 ) + 42 x ( 96 + 4 )
= 42 x 40 + 42 x 100
= 42 x ( 100 + 40 )
= 42 x 140
= 5880
Tk mk nha !! ~
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42. 53 + 47. 156 - 47. 114 = 42.53 +47.(156-114)
=42.53 +47. 42
= 42(53+47)
= 42.100 = 4200
53. ( 51 + 4 ) + 53. ( 49 + 96 ) + 53 = 53(51+4+49+96+1)
= 53. 201 = 10653
42. ( 15 + 96 ) + 6. ( 25 +4 ). 7 = 42. ( 15 + 96 ) + 42(25+4)
= 42(15+96+25+4)
= 42. 140 = 5880
mk lm xong rồi add friend nha
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TRẢ LỜI:
A/ 42 . 53 + 47 . 156 - 47 . 114
=2226 + 7332 - 5358
=9558 - 5358
=4200
B/ 53 . (51 + 4) + 53 .(49 + 96) + 53
=53 . 51 + 53 . 4+ 53. 49+ 53. 96+ 53
=2703 + 212 +2597 +5088 + 53
=2924 + 7738
=10662
C/ 42.(15+96)+6.(25+4).7
=42. 15+42. 96+6 . 25+6.4.7
=630+4032+150+168
=4980
CHÚC BN HOK TỐT
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Tính hợp lí
a, 15.(27+ 18 +6 ) + 15.( 23 +12)
b, 24.(15 + 49 ) + 12. ( 50 + 42 )
c, 53.(51+4)+53.(49+96) +53
d, 42.( 15 +96) +6.(25 +4).7
Tính hợp lí
a,15.(27+ 18 +6 ) + 15.( 23 +12)
= 15(27+18+6+23+12)
= 15.86
= 1290
b,24.(15 + 49 ) + 12. ( 50 + 42 )
=12.2(15+49)+12.(50+42)
= 12(30+98)+12(50+42)
=12(30+98+50+42)
=12.220
= 2640
c,53.(51+4)+53.(49+96) +53
=53(51+4)+53(49+96)+53.1
=53(51+4+49+96+1)
=53.201
=10653
d,42.( 15 +96) +6.(25 +4).7
=42(15+96)+42(25+4)
=42(15+96+25+4)
=42.140
=5880
tick đúng cho mk nha pikachu
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Tính hợp lí:
\(a)\)\(15.\left(27+18+6\right)+15.\left(23+12\right)\)
\(=\)\(15.51+15.35\)
\(=\)\(15.\left(51+35\right)\)
\(=\)\(15.86\)
\(=\)\(1290\)
\(b)\)\(24.\left(15+49\right)+12.\left(50+42\right)\)
\(=\)\(24.64+12.92\)
\(=\)\(1536+1104\)
\(=\)\(2640\)
\(c)\)\(53.\left(51+4\right)+53.\left(49+96\right)+53\)
\(=\)\(53.55+53.145+53\)
\(=\)\(53.\left(145+55+1\right)\)
\(=\)\(53.201\)
\(=\)\(10653\)
\(d)\)\(42.\left(15+96\right)+6.\left(25+4\right).7\)
\(=\)\(42.\left(15+96\right)+42.\left(25+4\right)\)
\(=\)\(42.111+42.29\)
\(=\)\(42.140\)
\(=\)\(5880\)