1 位数

1 位数

2 位数

2 位数

3 位数

4 位数

100

1+2

What is 2

100

10+13

What is 23

100

40+20

What is 60

100

100+300

What is 400

100

1,000+9,000

What is 10,000

200

2+7

What is 9

200

11+27

What is 38

200

52+30

What is 82

200

212+311

What is 523

200

1,010+2,133

What is 3,143

300

5+5

What is 10

300

30+18

What is 48

300

61+59

What is 120

300

224+277

What is 501

300

3,000+7,012

What is 10,012

400

8+4

What is 12

400

17+25

What is 42

400

77+87

What is 164

400

423+517

What is 940

400

2,300+4,160

What is 6,460

500

8+7

What is 17

500

33+25

What is 58

500

97+58

What is 155

500

381+538

What is 919

500

4,567+8,321

What is 12,888

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