138-89 = 5400 ÷ 54 = 200× 34 = 550-450 = 18000 ÷ 600 = 2700 ÷ 30 = 45× 14 = 65438+ 8+00= 17÷ 1 000= 0.56+0.4= 80×25= 1-0.93= 1.25× 100= 5.6+99= 100÷25= 90-0.9= 4 1× 100= 8800÷400= 0. 12× / kloc-0/0= 600÷30= 7.59÷ 100= 150+70= 356-98= 125×8= 6 12÷6= 12×80= 1.5× 100= 840÷40= 0. 1 25× 100= 8÷65 438+000= 2.3+3.6= 0.28+0. 12= 7.3+2.7= 7.5-3.4= 1-0.35= 3.6÷ 10= 5.6+2.3+0.7= 5× 17×2= 1 54-73-27= 1000×25= 24×0÷65438+ 02= 7.06× 100= 7.6÷ 10= 2.5× 10= 65.8÷ 100= 9 1.05÷ 1000= 300÷ / kloc-0/5= 0.05× 1000= 14×60= 5400÷600= 345+298= 0.5+0.4= 0.9-0.3= 0.35+0.43= 2.8- 1.2= 0.8 1-0. 1 9= 9.7-7= 7.8+2.2= 1-0.37= 3 10×5×2= 4×(25+50) = 32.8+ 19= 0.5 1÷ 17= 240÷30= 1000×0.8= 3.06+0.2= 8× / kloc-0/25= 0.67+ 1.24=7-6.28= 8.2-0.0 1= 99×23= 50×4= 5÷ 1000= 0.42+9.5= 10×0.5= 65×25×4= 0.08÷ 100= 1 .82-0.63= 4.5+ 1.5= 1-0.63=23 1-99= 3.7+2.5= 32+268= 1.3-0.7 = 2.4+0.6 = 7× 99+7= 24- 19+24+ 1 9= 7.5-2.8= 5.5-3.2= 120÷6÷2= 9 100÷70= 4×(36-25)= 1-0.2= 4.3+ 1.5= 300-84- 16= 2- 1.65438+ 0 = 1 45-99= 102×5= 3.5×60= 3. 12+5.2= 1 1.3-8.6= 0.23×400= 0.59+0.22= 60÷0.5= 2-0.29= 457+ 198= 756- 1 97= 45+6543 8+05-45+ 15= 5.4-2.5- 1.4= 0.36÷ 1.2= 5×3.3×0.2= 5.5×3= 14.5+9.5= 400÷25÷8= 7÷ 1.4= 4 1 6÷8= 2. 1÷30= 1.25×3×8 = 0.9-0.26= 82 1-202= 0.25÷50= 30.2×5= 125× 16= 7×( 10+0.5)= (0. 18+0.9) ÷9= 16.4-(3.5+6.4)= 8.3÷2.5÷0.4= 0.6+0.6×99= (0 .88+0. 16)÷8= 12.6+5.3+6.4= 9.6÷0.4÷5= 6× 1.4+6×4.6= 0.8÷(0.4×0.2)= / kloc-0/3.6÷8+ 10.4÷8= 0.74÷0.00 1= 5.4-2.5- 1.4= 2-0 .35-0.65= 6.4+ 1.07-0.47= 1.5-0.04= 420÷35= 0.49+0.6 1 = 2.4×0.2= 0.64÷0. 16= 55×80= 1 1.7+2.3= 735-298= 8 10÷27= 6 5438+00-8.25= 3200÷400= 360÷ 120= 1.29-0. / kloc-0/8= 15×( 100+3)= 0.6+5.47= 36+54= 7000÷200= 398+294= 500- 12= 250×40= 1 25×800= 97-59= 64×4= 998-299= 240×400= 54- 15= 140×7= 299+455= 15×60= 9 100÷700= 900÷50= 1 7+49= 25+68= 542-298= 152-4 6= 620-290= 100-79= 860-370= 0÷38= 670-540= 894-399= 68× 10 1= 1 9×40= 47×4= 95-64= 40× 19= 95×2= 590+30= 1 100÷50 = 83-25= 997+674= 3200÷200= 4200÷30= 5500÷500= 44×6= 7 1- 1 7= 900÷60= 60-52= 60-36= 7+75= 10000÷50= 500-27= 6600÷ 1 10= 96543 8+0-23= 22×50= 0×346= 125×32= 2 1×500= / kloc-0/250×4= 439+6 1= 392+208= 188+702= 15×400= 200-47= 289-98= 66+25= 239+42= 65×5 0= 65×2= 5×45= 650÷ 1 3= 740÷370= 75×40= 140÷30= 9600÷3200= 2×95= 200- 104= 15+97= 58÷2= 72÷4= 1000-37= 6000÷ 150= 6543 8+00 1 +52= 47- 19= 540×5= 740×6= 20000÷500= 28×300= 25× 12= 43×50= 530-250= 600÷ 120= 185-86= 90÷6= 700-7= 1 20+390= 64+ 36-58= 40×38×25= 2×96×5= ( 18+25)×4= 7× 125+ 125= 100×7+7= 90-69+27= 4 10-350-20= 25×( 100+2) = 95×( 100- 1) = 7×(40+7)= 645-(500- 1) = 870- 130- 150= 53-38- 14= 19×6+ 1 1 ×6= 827-59-24 1= 678-372-28= 17+ 15+ 18= 5000+4000-300= 365438 +00+260+420= 28×3+ 16÷4= ( 120-30×2) ÷4= (30×5+30)×5= 420× 18+580+ 180= 75÷( 18+ 14-27)= 900÷6- 520÷40= 60-60÷(4×3) = 87÷(20+30-47)= 90+90÷(48÷8) = 65÷5+3×9= 8.2+0.54+0.46= 6400÷200= 250×8= 3.9+2.03= 250- 160= 560÷40= 8×27× 125= 12×700= 1-0.2= ( 180+20) ÷5= 2÷ 1000= 1260÷30= 7× 19+7= 25× 18= 14.5÷ 100= ( 150+50)×8= 490÷35= 14.5÷ 1 00= 42×8×4= 272-97= 65438 +0.29-0. 18= 180÷5÷4= 198+27= 8+0.4= 2.5+3.2= 103×40= (22+78) ×7= 160×3= 2.4- / kloc-0/.7= 2.4- 1.8= 0.25+0.75= 86.2+ 15.8= 2 13÷3= (25+24) ×4= 8-2.5= 175-35= 420- 150= 9+0. 1= 46+49+5 / kloc-0/= 174-48-52= 1.05-0.09= 8×( 125+50) = 420÷6 10= 0.6+7.45= 72×4+28×4= 200÷8= 20- 19.7= 89÷ 1 00= 73× 1=0.82+0.08= 0.63× 10=4÷ 10= 17÷ 1000= 0.56+0.4= 1.25× 100= 5.6+99= 100÷25= 1 -0.93=5×2= 4×(25+50) = 90-0.9 = 5400÷600 = 7.6÷ 10 = 7.06× 100 = 345+298 = 2.5× 10 = 65.8÷ 100 = 9 1.05÷ 1 000 = 300÷ 15 = 0.05 8= 8—0.72= 0.25+0.75= 38× 19÷38= 780÷30= 25×4= 400×5= 12×200= 60×25= 300× 1 5= 900÷30= 84÷7= 53×5= 640÷40= 960÷60= 42×50= 0.6-0.47= 25×8= 1-0.06 = 0.8+4.7 = 0.75× 100 = 5.6 ÷ 100× 10 = 4 ÷ / kloc-0/0 = 0.08+ 1.= 17 ÷ 1000 = 720 ÷ 60 = 1-0.93 = 7× 800 = 760-450 = 3 10+48 = 240+ 160.= 820,000-540, 000 = 320+60 = 860-47 = 720 ÷ 30 = 7× 9 ÷ 7× 9 = 430+ 190 = 5 10 ÷ 30 = 340+270 = 80-56 = 580-4 10 = 196+68 = 1 80,000+230, 000 = 1000-620 = 4 10-203 = 0 ÷ 578 = 38 40+270= 72÷ 18= 90÷ 15= 720÷ 12= 1 25×24= 720÷48= 630÷45÷2= 299+435= 260-98= 25×24×5= 3.7+2.5= 120÷6÷2= 960÷48= 43 1+654 38+099= 362- 1 03= 360÷8÷5= 25×32= 720÷48= 5.5-3.2= 40+30×20= 1.3-0.7= 2.4+0.6= 7×99+7= 4.3+ 1.5= 300-84- 16= 2- 1. 1 = 7.5-2.8= 4×(36-25)= 90÷6= 13× 10 1- 13= 6×4×5×5= 650÷5+80= 64+36+5= 60×30= 8×7+56= 300÷3÷5= 420-(420-300)= 24- 1 9+24+ 19= (59+2 1)×(72÷6)= 125+ 125+ 125+ 125+ 125+ 125+ 125+ 125=

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The fourth grade elementary school mathematics volume 2 oral arithmetic problems and answers.

The oral questions and answers of mathematics in the second volume of mathematics in the fourth grade of primary school are as follows: 1. 640÷80= 8 2, 15×5= 75 3, 23×3= 69 4, 12×2×5= 120 5, 480 ÷ 80.48÷4= 12 X，640÷ 16=40 XI，39÷3= 13 XII，24×20= 480 XIII，32×3= 96 XIV，48÷654； . 24 ÷ 8 = 3 19, 14×2=28 20, 83-45 = 38 2 1, 560 80 = 722, 96 24 = 423, 40 20 = 224, 40× 30 = 624.

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Urgent for the fourth grade 500 crossing problem, there is an answer (last semester)

90÷30=3 640÷20=32 92-58=34 26+54=80 1400×5=7000 420÷70=6 60÷20=3 68÷4= 17 450÷50=9 370÷ 10=37 640÷80=8 1 5×5=75 23×3=69 12×6 5438+00= 120 480÷80=6 16×5=80 27×3= 8 1 90÷ 15= 6 48÷4= 12 630÷70=9 1 2×8=96 60÷30= 2 24×20=480 32×3=96 30÷ 6= 5 480÷80= 6 600+40=200 150÷50=3 630÷70=9 50÷5= 10 15×6=90 300÷60=5 1 6×3= 48 70÷5= 14 36÷2= 18 2×45=90 13×4= 52 87+ 13 = 100 39+6 1= 100 567+299= 866 1 5×2= 30 327- 198= 127 4×5=20 18×35=630 32×25= 800 4500÷900=5 70+90= 160 4800÷ 40= 12 14×20 1=28 / kloc-0/4 80÷ 16=5 420÷20= 2 1 2500÷50=50 16×5= 80 32×20= 640 67×4=268 40×9=360 240÷40=6 360÷60=6 87÷3= 29 25×4= 1 00 696÷3= 232 125×8= 1000 8×25=200 80÷20=4 4×50=200 20×2= 40 300×6= 1800 120×3 = 360 420×20 =8400 1 6×70= 65 438+0 120 150×20= 3000 60÷30= 2 80÷20=4 240÷40 =6 2 10÷70=3 400÷50=8 1000÷ 100= 10 25×40= / kloc-0/000 125×8= 1 000 300×330=99000 3× 1400=4200 80÷40=2 600÷30=20 400÷80=5 140×300=4200 8800÷40=220 9600÷800= / kloc-0/2 750-290=460 5×490=2450 760×20= 152 00 750 ÷ 50 = 15 37× 200 = 7400 660 ÷ 20 = 33 8600-4200 = 4400 2 10 ÷ 3 = 70 40 ÷ 5 = 8 160.

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Fourth grade, the second volume of mathematics oral calculation plus answers

138-99 = 5400 ÷ 54 = 200× 34 = 550-450 = 18000 ÷ 600 = 2700 ÷ 30 = 45× 14 = 65438+ 73× 1= 0.63× 10= 4÷ 1 0= 17÷ 1000= 0.56+0.4= 80×25= 1-0.93= 1.25× 100= 5.6+99= 100÷25= 90-0.9= 4 1× 1 00= 8800÷400= 0. 12× 10= 600÷30= 7.59÷ 100= 65438+ 050+70= 356-98= 125×8= 6 12÷6= 12×80= 1.5× / kloc-0/00= 840÷40= 0. 125× 100= 8÷65438 +000= 2.3+3.6= 0.28+0. 12= 7.3+2.7= 7.5-3.4= 1-0.35= 3.6÷ 1 0= 5.6+2.3+0.7= 5× 17×2= 154-73 -27= 1000×25= 24×0÷ 12= 7.06× 100= 7.6÷ 10= 2.5× 10= 65.8÷ 1 00= 9 1.05÷ 1000= 300÷6 5438+05= 0.05× 1000= 14×60= 5400÷600= 345+298= 0.5+0.4= 0.9-0.3= 0.35+0.43= 2.8- 1 .2= 0.8 1-0. 19= 9 .7-7= 7.8+2.2= 1-0.37= 3 10×5×2= 4×(25+50) = 32.8+ 19= 0.5 1÷ 17= 240÷30= / kloc-0/000×0.8= 3.06+0.2= 8× 125= 0.67+ 1.24= 7-6.28= 8.2-0.0 1= 99 ×23= 50×4= 5÷ 1000= 0.42+9.5= 10×0.5= 65×25×4=

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Grade four math oral calculation 500 and answer book 2-to find the answer, just "ask"

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The fourth grade oral arithmetic problem card book 2.

1 Understanding of a large number of oral math problem cards in the first volume of fourth grade mathematics (1) Understanding of the number within 100 million (200× 30 = 42× 4 = 63× 7 = 230× 20-46 =130× 3 = 60× 50 = 36× 3) kloc-0/5×8+97 = 23×30 = 5 1×3 = 250×50 = 2 10÷3-69 = 60×60 = 80×5 = 240×80 = 10×5-46 = 1 20×20 = 270×90 and the understanding of the number within 100 million in the first book of fourth grade mathematics (2)1000000000000000000000006 ÷14× 5 = 28× 3 = 56×1. 0×47 = 9 1÷655 Understanding of the number of oral calculation questions in the first volume of mathematics in grade four (3)1) 3200× 2 = 2) 24× 20 = 3) 70-14 = 4) 28× 3× 2. -13 = 65438 76- 19 = Read the following numbers:10000300 5600001305002010500030 Understanding of the numbers within 100 million in the oral math card of the first volume of the fourth grade mathematics. 400÷8×3 = 5)420÷3 = 6)90- 15 = 7)3 12-239 = 8)80×20+56 = 9)3×24 = 10)92÷46 = 1 1)8 10÷9 = 12) 25×4×6 = 25 Parents can give appropriate guidance) Decimal counting method (1) 8.94-6.73 = 2) 8.95-0.73 = 3) 3.61-0.30 = 4) 7.78-5. 7.7 1-2.69 = 8)9.9 1-8.74 = 9)6.07- 1.69 = 10)5.00+6. 13 = 1 1)8.24-7.63 = 12)5.2 1 +5.49 Decimal counting method (2)1) 500× 5 = 2)16× 3 = 3) 34. 19×3= 6) 22×3= 7) 25×6= 8) 40×4= 9) 40×4= 10) 16×8= 1 1) 130×2= 12) 270×3= 13) 28×3= / kloc-0/4) 35×2= 15) 15×6= 16) 24÷8= 17) 12×9= 18) 26×3= 19) 16×8= 20) 80×8= 2 1 ) 28×3= 22) 38×2= 23) 24×4= 24) 16×4= 25) 22×3= 26) 8 1÷9= 27) 40×4= 28) 48×2= 29)