37x86+43x26简便运算
87X86十43X26递等式计算,图片 -
回答：86x(87+13) =86x100 =8600
原式等于17.4×2×13+34.8×86+34.8×1＝38.4×（13+83+1）38.4×100=3840
回答：86x(87+13) =86x100 =8600
原式等于17.4×2×13+34.8×86+34.8×1＝38.4×（13+83+1）38.4×100=3840
17.4x26+34.8x86+8.7x4 =17.4×26+（34.8÷2）×86+（8.7×2）×4 =17.4×26+17.4×86+17.4×4 =17.4×（26+86+4）17.4×116 =2018.4
原式=34.8x13+34.8x86+34.8=34.8x(13+86+1)=34.8x100=3480
12.8加3.4减1.21乘30简便计算怎么算 -
18X5+2556X8÷56X8280-80÷412X6÷12X6175-75÷2525X8÷25X880-20X2+6036X9÷36X936-36÷6-625X8÷(25X8)100+45-100+4515X97+3100+1-100+148X99+11000+8-1000+85+95X28102+1-102+165+35X1325+75-25+7540+360÷20-1013+24X8672-36+64324-68+32100-36+64四年级运算定律与简便计算练习题一、..
1x2x3x4x5x6x7x8x9x10x11x12x13x14x15x16x17x18x19x20x21x22x23x24x25x26x27x28x29x30x31x32x33x34x35x36x37x38x39x40x41x42x43x44x45x46x47x48x49x50x51x52x53x4x55x56x57x58x59x60x61x62x63x64x65x66x67x68x69x70x71x72x73x74x75x76x77x78x79x80x81x82x83x84x85x86x87x8等会说。
17.4x26+34.8x86+8.7x4简便计算 -
很高兴回答你的问题。
1x2x3x4x5x6x7x8x9x10x11x12x13x14x15x16x17x18x19x20x21x22x23x24x25x26x27x28x29x30x31x32x33x34x35x36x37x38x39x40x41x42x43x44x45x46x47x48x49x50x51x52x53x4x55x56x57x58x59x60x61x62x63x64x65x66x67x68x69x70x71x72x73x74x75x76x77x78x79x80x81x82x83x84x85x86x87x8后面会介绍。
1X2X3……X100=? 有什么简便方法吗? -
x(31x32x33x34x35x36x37x38x39x40)x(41x42x43x44x45x46x47x48x49x50)x(51x52x53x4x55x56x57x58x59x60)x(61x62x63x64x65x66x67x68x69x70)x(71x72x73x74x75x76x77x78x79x80)(81x82x83x84x85x86x87x88x89x90)x(90x91x92x93x94x95x96x97x98x99x100)好了吧！