三年级速算与巧算

一:有没有学三年级的速算与巧算的题

题干信息不全

二:三年级数学巧算

54×65+65×46

=65x(54+46)

=65x100

=6500

45×24+76×45

=45x(24+76)

=45x100=4500

368+7224÷12

=368+602

=970

2748-135-548

=2748-548-135

=2065

﹙7851-3018﹚÷27

=4833÷27

=179

800-400÷25

=800-16

=784

3900÷26×18

=150×18

=2700

其余的追问一下

三:数学巧算三年级

342-420÷60

=342-7

=335

245+255÷30

=245+8.5

=253.5

218-178+82

=218+82-178

=300-178

=122

5×182+18×5

=5×(182+18)

=5×200

=1000

82×﹙351+104﹚

=82×455

=37310

﹙522-477﹚×140

=45×140

=6300

9090÷15×20

=9090×20÷15

=181800÷15

=12120

63×63+37×36 估计你写错数字了,否则可以简便

=3969+1332

=5301

35×9÷3

=35×3

=105

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