72×63+72×39-144=________ | 7964÷________=346…6. |
7200 23
分析:(1)把144看做72×2,然后根據(jù)乘法分配律進(jìn)行簡算即可;
(2)要求除數(shù)是多少,用被除數(shù)減去余數(shù),所得的差再除以商即可.
解答:(1)72×63+72×39-144,
=72×63+72×39-72×2,
=72×(63+39-2),
=72×100,
=7200;
(2)(7964-6)÷346,
=7958÷346,
=23.
故答案為:7200,23.
點(diǎn)評:四則運(yùn)算,先弄清運(yùn)算順序,然后再進(jìn)一步計(jì)算,能簡算的要簡算.
練習(xí)冊系列答案
相關(guān)習(xí)題
科目:小學(xué)數(shù)學(xué)
來源:
題型:
3.2+4.8= |
6.3-0.94= |
0.25×4= |
5×1.2= |
4.8÷0.6= |
4.8÷24= |
3.6-2.4= |
6-4.6= |
8-3.4= |
6×0.21= |
1.25×8= |
0.8÷0.5= |
25×0.3= |
0.63-0.3= |
2.5+7.5= |
34×0.1= |
7-0.99= |
21÷0.7= |
5×2.4= |
3×1.03= |
3.2÷4= |
1.5÷30= |
5.1÷3= |
0.37÷0.37= |
0.28÷14= |
0.16÷4= |
8×0.05= |
4×0.125= |
4÷8= |
7.5-0.7= |
9-0.9= |
7÷2= |
2.8÷0.7= |
21-0.21= |
5÷0.01= |
2.8×0= |
7÷0.07= |
6.3÷0.5= |
0.32÷0.8= |
1÷0.25= |
0.25×0.4= |
30×2.3= |
3.6÷1.2= |
2.5+1.2= |
3.5×0.2= |
9÷0.45= |
0.96÷0.16= |
4.8-2.9= |
0.5÷0.25= |
7.6+2.4= |
0.17×0.4= |
8.2×0.01= |
1.72-0.73= |
0.46÷2= |
1.9×0.8= |
1.2×0.3= |
1-0.92= |
0.16×0.7= |
0.56÷0.16= |
8÷0.6= |
查看答案和解析>>
科目:小學(xué)數(shù)學(xué)
來源:
題型:
直接寫得數(shù)
60÷3= |
72÷3= |
63÷3= |
58+3= |
40-4= |
21×2= |
45÷5= |
80÷4= |
72÷9= |
86÷2= |
36+6= |
38÷6= |
查看答案和解析>>
科目:小學(xué)數(shù)學(xué)
來源:
題型:
6.509÷0.27= 65.09 65.09 ÷2.7 2.7 |
1.3÷0.63= 13 13 ÷6.3 6.3 . |
查看答案和解析>>
科目:小學(xué)數(shù)學(xué)
來源:
題型:閱讀理解
1.
(1)438+203 |
(2)256+199 |
(3)416-302 |
(4)325-198 |
(5)278+498 |
(6)3.6+2.7+6.4+7.3 |
(7)+++2 |
(8)1.3+4.25+3.7+3 |
(9)1874-324-476 |
(10)5-1.4-1.6 |
(11)30-8.12-4.13-7.75 |
(12)-+ |
(13)4.3-2.45+5.7-6.55 |
(14)125×48 |
(15)25×32 |
(16)35×1.4 |
(17)1.25×88 |
(18)0.25×444 |
(19)32×0.25×12.5 |
(20)25×80×0.04×125 |
(21)1.9×4×0.5 |
(22)25×1.25×4×0.8 |
(23)(1.6+1.6+1.6+1.6)×2.5 |
(24)(0.7+0.7…+0.7)×12.5(80個(gè)0.7相加) |
|
|
(24)9.9×8.6+8.6 |
(25)99×5.4 |
(26)4.8×1.01 |
(27)95×101-95 |
(28)95×102-190 |
(29)95.6×18+0.4×18 |
(30)(-+)×12 |
(31)(+-)÷ |
(32)24×(+-) |
(33)24÷(+-) |
(34)1.25×3.6+1.25×3+1 |
(35)3.3×+0.75×5+75% |
(36)2×6.6+7.5×6 |
(37)9.56×180-95.6×8 |
(38)4.8×37+47×6.3 |
(39)9.5×8.8+0.12×95 |
(40)×21 |
(41)×33 |
(42)÷ |
(43)÷ |
(44)÷42 |
(45)6×0.75+5×-3÷4 |
(46)5.4÷1.2÷5 |
(47)270÷18 |
(48)120÷(1.2×4) |
(49)73÷0.8÷12.5 |
(50)16÷2.5 |
(51)48÷1.25 |
(52)-(-)+ |
(53)84-(54-16) |
(54)84-(54+16) |
(55)9999×7778+3333×6666 |
(56)3.6×31.4+43.9×6.4 |
(57)(+)× |
(58)×+÷ |
(59)-- |
(60)×-× |
(61)×÷× |
(62)-×- |
(63)×[÷(+)] |
(64)(0.9+5)×3+2.3 |
(65)56× |
(66)+÷+ |
(67)(+)÷(+) |
(68)÷(-) |
(69)(-)÷ |
(70)7.2÷(5-0.75-0.25) |
(71)6.4+3.6÷0.5+4.5 |
(72)(6.4+3.6)÷0.5+4.5 |
(73)495÷55+495÷45 |
(74)8÷0.4+8÷1.6 |
(75)0.9+99×0.9 |
(76)5.28-(1.62+2.28) |
(77)-+ |
(78)4×(+) |
(79)+++ |
(80)2-(+)- |
(81)×+× |
(82)×+× |
(83)×9+ |
(84)(5+)× |
(85)(+)×24 |
(86)(20+)× |
(87)×39× |
(88)×(+) |
(89)(-)×12 |
(90)×(26×) |
(91)+++ |
(92)17×- |
(93)(+)× |
(94)(+)÷ |
(95)(+)÷3 |
(96)(-)÷ |
(97)÷+÷ |
(98)×(10+) |
(99)(21+)÷ |
(100)×+× |
(101)÷+÷ |
(102)(-)÷ |
(103)×++ |
(104)_×- |
(105)-(÷+) |
(106)+×+ |
(107)1-÷- |
(108)×+÷4 |
(109)5-(4+) |
(110)1125-997 |
(111)7.46-0.83-2.17 |
(112)12.85-1.17-8.83+1.15 |
(113)4.5×102 |
(114)0.4×6.3×25 |
(115)(4.9+4.9+…+4.9)×2.5(16個(gè)4.9相加) |
(116)7.5×199 |
(117)(+)×36 |
(118)1.2×5.7-1.2+5.3×1.2 |
(119)0.825×102-82.5 |
(120)46× |
(121)560÷16÷5 |
(122)3÷2.5 |
(123)84+(54-16) |
(124)+++ |
(125)-(÷+) |
(126)3×(+)+ |
(127)7.2÷(5-0.75+0.25) |
(128)725÷25+275÷25 |
(129)×× |
(130)×45-÷ |
(131)48×(-) |
(132)×+× |
(133)(32+)÷4 |
(134)÷÷ |
(135)46× |
(136)×+÷9 |
|
查看答案和解析>>
科目:小學(xué)數(shù)學(xué)
來源:
題型:閱讀理解
4.7+2.3= |
4.5×2= |
6.9-2.5= |
7.2×0.8= |
6×3.4= |
0.62-0.32= |
1.4×0.5= |
0.75×100= |
0.02×0.5= |
3.6÷0.3= |
6.3÷7= |
5.6÷100= |
0.75÷0.25= |
0.125×8= |
4.8÷0.3= |
0.96÷2= |
0.56÷28= |
0.36÷0.4= |
0.64÷0.8= |
0.72÷3.6= |
3.6÷24= |
0.8×1.1= |
7.2+12.8= |
46.7-3.8= |
12.8÷4= |
5.2÷13= |
12.5÷5= |
1.64÷41= |
10÷20= |
24÷15= |
8.65×10= |
0.35×0.6= |
3.08×0.01= |
4.95×1000= |
6.9×0.1= |
0.4×0.5= |
2.4÷0.8= |
10.8÷9= |
9.6÷0.8= |
0.108÷2= |
4.95÷0.9= |
9.65÷0.1= |
0.325×100= |
2.5×8= |
0.56÷0.7= |
0.125×4= |
3.28×0.1= |
3.9÷0.13= |
7.2×0.1= |
0.01×0.1= |
0.25×0.4= |
1.6÷0.8= |
1÷2.5= |
1.25×0.8= |
3.2÷0.04= |
0÷1.7= |
0.22×102= |
9.6÷0.8= |
5×0.24= |
4.5-0.05= |
3.9÷0.13 |
16.5÷0.5= |
5×0.12= |
24×0.5= |
4.8×0.5= |
2.8+4.2= |
0.84÷2.1= |
5÷0.25= |
7.8÷0.01= |
5.4÷0.6= |
3.2÷5= |
7×0.62= |
0.56÷0.8= |
7.4-2.8= |
0.18÷0.2= |
0.16÷8= |
4.5×0.02= |
8+7.2= |
1.2×30= |
0.012×0.2= |
7.3×0.3= |
9÷6= |
3.6÷0.12= |
7.8÷0.6= |
2÷5= |
4.5+5= |
0.3÷0.6= |
0.96÷0.2= |
10.5×0.4= |
7.3+0.27= |
8×0.125= |
0.54÷0.6= |
0.61+0.39= |
0.56÷28= |
10÷20= |
4.08÷0.4= |
11-9.4= |
0.8×0.11= |
0.72+12.8= |
5.6÷0.01= |
2.3×100= |
0.75×100= |
0.108÷2= |
10.8÷9= |
0.7÷0.8= |
16-5.07= |
4.2×0.4= |
0.72×6= |
12÷0.5= |
5.2×0.4= |
12.2÷0.2= |
5.6÷100= |
0.41+3.7= |
0.02×0.5= |
7.2-0.8= |
1.4×0.5= |
84÷0.21= |
0.75÷0.25= |
2.5×16= |
0.108÷2= |
1.75+32.5= |
16-5.07= |
5.2÷13= |
1.64÷41= |
1.02×0.2= |
0.26×0.3= |
8.4×0.02= |
1.29×6= |
0.8×0.05= |
12.6÷0.03= |
8.71÷0.1= |
21÷0.21= |
0.8×0.13= |
0.34÷17= |
8.08÷0.4= |
0.5×2.2= |
1.24÷4= |
3.27+0.63= |
5.02×0.3= |
0.3×0.5= |
6.4÷4= |
7.2÷1.8= |
0.7÷0.35= |
0.72÷1.44= |
0.48÷0.04= |
1.25÷2.5= |
5.5+55= |
16.8÷8= |
0.54+2.2= |
3.5-0.05= |
2÷0.02= |
0.25×40= |
1.5×0.6= |
0.32÷0.8= |
12.25÷0.5= |
73.5×0.1= |
46.5+52.5= |
0.45×102= |
1.25×88= |
2.64+3.85+1.54= |
8×1.25= |
5.6÷3.5= |
4.2÷0.7÷6= |
0.4×8.6×25= |
0.27÷0.3= |
2.5×101= |
0.65×101-0.65= |
2.6×7÷2.6×7= |
查看答案和解析>>