简便计算题及答案

简便计算题及答案
简便计算题及答案

1)125 ×(17 × 8)× 4 2)375 × 480 + 6250 × 48 3)25 × 16 ×125 4)13 × 99

5)75000 ÷ 125 ÷ 15 6)7900 ÷ 4 ÷ 25

7)150 × 40 ÷ 50 8)5600 ÷(25 × 7)

9)210 ÷ 42 × 6 10)39600 ÷ 25

11)67 × 21 +18 × 21 + 85 × 79 12)321 × 81 + 321 × 19

13)222222 × 999999 14)333333 × 333333

15)56000 ÷ (14000 ÷ 16) 16)654321 × 909090 +654321 ×90909

17)34 × 3535 -35 × 3434 18)27000 ÷ 125

19)345345 ÷ 15015 20)347 + 358 + 352 + 349

21)75 × 45 + 17 × 25 22)599996 + 49997 + 3998 + 407 + 89

23)(48 × 75 ×81)÷(24 × 25 × 27)

四年级数学简便计算题及答案:

1)125 ×(17 × 8)× 4 2)375 × 480 + 6250 × 48 = 125×8×4×17 =480×(375+625)

=1000×68 =480000

=68000

3)25 × 16 ×125 4)13 × 99

=25×2×8×125 =13×(100-1)

=50000 =1300-13

=1287

5)75000 ÷ 125 ÷ 15 6)7900 ÷ 4 ÷ 25

=75×1000÷125÷15 =7900÷(4×25)

=75÷15×1000÷125 =79

=5×8

=40

7)150 × 40 ÷ 50 8)5600 ÷(25 × 7)

=150÷50×40 =56×100÷25÷7

=3×40 =56÷7×100÷25

=120 =32

9)210 ÷ 42 × 6 10)39600 ÷ 25

=210÷7÷6×6 =396×100÷25

=30 =396×4

=1584

11)67 × 21 +18 × 21 + 85 × 79 12)321 × 81 + 321 × 19

=21×(67+18)+85×79 =321×(81+19)

=21×85+85×79 =32100

=85×(21+79)

=8500

13)222222 × 999999 14)333333 × 333333

=222222×(1000000-1) =111111×999999

=222222000000-222222 =111111×(1000000-1)

=222221777778 =111111000000-111111

=111110888889

15)56000 ÷ (14000 ÷ 16) 16)654321 × 909090 +654321×90909

=56000÷14000×16 =654321×999999

=4×16 =654321×(100000-1)

=64 =654321000000-654321

=654320345679

17)34 × 3535 -35 × 3434 18)27000 ÷ 125

=34×35×101-35×34×101 =27×1000÷125

=0 =27×8

=216

19)345345 ÷ 15015 20)347 + 358 + 352 + 349

=345×1001÷(15×1001) =350×4-3+8+2-1

=345÷15×1001÷1001 =1400+6

=23 =1406

21)75 × 45 + 17 × 25 22) 599996 + 49997 + 3998 + 407 + 89 =25×3×45+17×25 =600000+50000+4000-4-3-

2+407+89

=25×(135+17) =65400+487 =25×152 =65887

=25×4×38

=3800

23)(48 × 75 ×81)÷(24 × 25 × 27)

=48÷24×75÷25×81÷27

=2×3×3

=18

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