四年级数学简便计算题及答案
善良的谎言-模拟填志愿
精品资料 欢迎下载
四年级数学简便计算题及答案
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
9)210 ÷ 42 × 6
11)67 × 21 +18 × 21 + 85 × 79
13)222222 × 999999
15)56000 ÷ (14000 ÷ 16)
17)34 × 3535 -35 × 3434
19)345345 ÷ 15015
21)75 × 45 + 17 × 25
23)(48 × 75 ×81)÷(24 × 25 × 27)
8)5600 ÷(25 × 7)
10)39600 ÷ 25
12)321 × 81 + 321 × 19
14)333333 ×
333333
16)654321 × 909090 +654321 × 90909
18)27000 ÷ 125
20)347
+ 358 + 352 + 349
22)599996 + 49997 + 3998 +
407 + 89
精品资料
欢迎下载
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
5)75000 ÷ 125 ÷ 15
=75×1000÷125÷15
=75÷15×1000÷125
=5×8
=40
7)150 × 40 ÷ 50
=150÷50×40
=3×40
=120
9)210 ÷ 42 × 6
=210÷7÷6×6
=30
11)67 × 21 +18 × 21 + 85 × 79
=21×(67+18)+85×79
=21×85+85×79
=85×(21+79)
=8500
13)222222 × 999999
=222222×(1000000-1)
=222222000000-222222
=222221777778
15)56000 ÷ (14000 ÷ 16)
=56000÷14000×16
=4×16
=64
17)34 × 3535 -35 × 3434
=1300-13
=1287
6)7900 ÷ 4 ÷ 25
=7900÷(4×25)
=79
8)5600 ÷(25 × 7)
=56×100÷25÷7
=56÷7×100÷25
=32
10)39600
÷ 25
=396×100÷25
=396×4
=1584
12)321
× 81 + 321 × 19
=321×(81+19)
=32100
14)333333 ×
333333
=111111×999999
=111111×(1000000-1)
=0-111111
=9
16)654321 × 909090
+654321×90909
=654321×999999
=654321×(100000-1)
=654321000000-654321
=654320345679
18)27000 ÷
125
精品资料 欢迎下载
=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
=25×3×45+17×25
=25×(135+17)
=25×152
=25×4×38
=3800
23)(48 × 75 ×81)÷(24 ×
25 × 27)
=48÷24×75÷25×81÷27
=2×3×3
=18
22) 599996 + 49997 + 3998 + 407 +
89
=600000+50000+4000-4-3-2+407+89
=65400+487
=65887