超全！必考二年级奥数寒假天天练，学而思二年级计算拓展题目解析

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黄怎览1863二年级奥数题
危婷苑17078611028 ______ 第一天:上4米、下3米,升1米,还有5米 第一天:上4米、下3米,升1米,还有4米 第三天:上4米,此时已到顶 三天后能到墙顶

黄怎览1863小学2年级奥数题目 -
危婷苑17078611028 ______ 解:1.设有X人. 依题意得 7X+2=8X X=2 7*2+2=16(棵) 答:一共有16棵树苗. 2.喝掉买的4瓶,有4个空瓶子,换1瓶,喝完后共有2个空瓶子,再借1瓶,喝掉后共有3个空瓶,再换一瓶,还回去.这样下来,共喝了4+1+1=6(瓶)

黄怎览1863小学二年级下期奥数题1 2 3 4 5 6 7 8 9=48答案 -
危婷苑17078611028 ______ (1+2+3+4)*5+6-7+8-9=48

黄怎览1863二年级奥数题
危婷苑17078611028 ______ {[(8+8)x8]-[(8+8)/8]} x 8 - 8 = 1000 so 8+8 = 16 把上面这个乘以8等于128 (8+8)/8 = 2 128-2 = 126 126 x 8 = 1008 1008 - 8 = 1000

黄怎览1863奥数题二年级的题目!!!!!!!!!!! -
危婷苑17078611028 ______ 8 1 1 (10) 60 30 (58) 80 竖着算 2+7+8+13=30*2=60 5+6+1+3=15*2=30 8+7+1+13=29*2=58 12+2+10+16=40*2=80

黄怎览18632年级奥数题
危婷苑17078611028 ______ 第一行:2 7 6 第二行:9 5 1 第三行:4 3 8

黄怎览1863二年级下册级数学奥数题 -
危婷苑17078611028 ______ 设男孩x人,女孩y人 x-1=y 2(y-1)=x 解得x=4 y=3

黄怎览1863二年奥数题
危婷苑17078611028 ______ 一天24*60=1440(分),第一个钟需要在1440/20=72、144、216、288、360……天之后才能回到标准时间,第二个钟需要在1440/30=48、96、144、192……天之后才能回到标准时间,二者都能在144天之后才能回到标准时间,所以,144天之后,他们会再次在标准时间相遇. (一楼的,这么简单的题你初一还不会?我才六年级!)

黄怎览1863小学二年级奥数题 -
危婷苑17078611028 ______ 鸡兔同笼...假设13只都是鸭,一共有腿:13*2=26只 现在有36条腿,多了36-26=10条 这是因为每只羊比每只鸭多了4-2=2条腿 所以羊有:10/2=5只 鸭有:13-5=8只

黄怎览1863二年级奥数题 -
危婷苑17078611028 ______ 1,2,4,8,16,32,64,128