三年级多位数乘一位数

一、口算 (整十、整百乘一位数)

300 × 4 = 1200

300 × 9 = 2700

800 × 7 = 5600

100 × 3 = 300

300 × 4 = 1200

70 × 2 = 140

70 × 9 = 630

800 × 6 = 4800

60 × 2 = 120

60 × 2 = 120

100 × 2 = 200

400 × 4 = 1600

二、列竖式计算 (注意进位和0的处理)

700

×

7

4900

709

×

2

1418

83

×

8

664

805

×

9

7245

106

×

2

212

28

×

6

168

500

×

8

4000

201

×

2

402

704

×

4

2816

130

×

7

910

57

×

4

228

509

×

4

2036

550

×

7

3850

38

×

4

152

106

×

3

318

68

×

9

612