Toán Lớp 4: 6) Tính nhanh : 58 × 635 – 48 × 635 *
Your answer
7) Tính nhanh : 258 x 5 + 258 x 15 *
Your answer
8) Tính nhanh : 728 x 98 – 728 x 88 *
Your answer
9) Tính nhanh : 43 x 95 + 5 x 43 *
Your answer
10) Tính nhanh : 36 × 532 + 63 × 532 + 532 *
Your answer
11) Tính nhanh : 245 × 327 – 245 × 18 – 9 × 245 *
Your answer
12) Tính nhanh : 679 + 679 × 123 – 679 × 24 *
Your answer
13) Tính nhanh : 2 x 134 x 5 *
Your answer
14) Tính nhanh : ( 56 x 49) : 7 *
Your answer
15) Tính nhanh : 165 x 59 + 165 + 165 x 40 *
Your answer
16) Tính nhanh : 312 x 425 + 312 x 574 + 312 *
Your answer
17) Tính nhanh : 2 x 8 x 50 x 25 x 125 *
Your answer
18) Tính nhanh : 20 x 190 x 50 *
Your answer
19) Tính nhanh : 25 x 125 x 4 x 8 *
Your answer
20) Tính nhanh : 876 : 50 + 124 : 50
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Comments ( 2 )
XIN HAY NHẤT
6) 58 × 635 – 48 × 635=635×(58-48)=635×10=6350
Your answer: 6350
7) 258 × 5 + 258 × 15=258×(5+15)=258×20=1160
Your answer: 1160
8) 728 × 98 – 728 × 88=728×(98-88)=728×10=7280
Your answer: 7280
9) 43 × 95 + 5 × 43=43×(95+5)=43×100=4300
Your answer: 4300
10) 36 × 532 + 63 × 532 + 532=532×(36+63+1)=532×100=53200
Your answer: 53200
11) 245 × 327 – 245 × 18 – 9 × 245=245×(327-18-9)=245×300=73500
Your answer: 73500
12) 679 + 679 × 123 – 679 × 24=679×(1+123-24)=679×100=67900
Your answer: 67900
13) 2 × 134 x 5 =(2×5)×134=10×134=1340
Your answer: 1340
14) ( 56 × 49) : 7 = (56 : 7)+(49:7)=8+7=15
Your answer: 15
15) 165 × 59 + 165 + 165 × 40 =165×(59+1+40)=165×100=16500
Your answer: 16500
16) 312 × 425 + 312 × 574 + 312=312×(425+574+1)=312×1000=312000
Your answer: 312000
17) 2 × 8 × 50 × 25 × 125=(8×125)×(2×25)×50=1000×50×50=2500000
Your answer: 2500000
18) 20 × 190 × 50=(20×50)×190=1000×190=190000
Your answer: 190000
19) 25 × 125 × 4 × 8=(25×4)×(125×8)=100×1000=100000
Your answer: 100000
20) 876 : 50 + 124 : 50=(876+124):50=1000:50=20
Your answer: 20
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Giải đáp + Lời giải và giải thích chi tiết :
6) 58xx635-48xx635
=635xx(58-48)
=635xx10
=6350
7) 258xx5+258xx15
=258xx(5+15)
=258xx20
=5160
8) 728xx98-728xx88
=728xx(98-88)
=728xx10
=7280
9) 43xx95+5xx43
=43xx(95+5)
=43xx100
=4300
10) 36xx532+63xx532+532
=532xx(36+63+1)
=532xx100
=53200
11) 245xx327-245xx18-9xx245
=245xx(327-18-9)
=245xx300
=73500
12) 679+679xx123-679xx24
=679xx(1+123-24)
=679xx100
=67900
13) 2xx134xx5
=2xx5xx134
=10xx134
=1340
14) (56xx49):7
=2744:7
=392
15) 165xx59+165+165xx40
=165xx(59+1+40)
=165xx100
=16500
16) 312xx425+312xxx574+312
=312xx(425+574+1)
=312xx1000
=321000
17) 2xx8xx50xx25xx125
=(2xx50)xx(125xx8)xx25
=100xx1000xx25
=2500000
18) 20xx190xx50
=190xx20xx50
=190xx1000
=190000
19) 25xx125xx4xx8
=25xx4xx125xx8
=100xx1000
=100000
20) 876:50+124:50
=(876+124):50
=1000:50
=20