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1. Bob: What class are you in, Mike?

2. Mary: What’s your number, Linda?

Linda: I’m number__________. How about you? Mary: I’m number__________.

two, three, one, four eleven, fourteen, twelve, thirteen

nineteen 16

sixteen 19

seventeen 4

four 3

three 13

thirteen 8

eight 20

twenty 17

1. What’s eight and nine? It’s seventeen.

2. What’s five and seven? It’s twelve.

3. What’s ten and six? It’s sixteen.

4. What’s two and eleven? It’s thirteen.

15+3=? ( ) 11+2=? ( ) 9+8=? ( ) 13+1=? ( )

10+5=? ( ) 12+4=? ( )

1. What’s eight and nine? It’s sixteen. ( )

2. What’s five and seven? It’s twelve. ( )

3. Fifteen and sixteen are neighbours(邻居). ( )

4. Eleven and thirteen are neighbours. ( )

Hi! My name is Kate. I’m in Class Two, Grade Four. My number is eleven. Nancy is my new friend. She’s in Class Three, Grade Four. Her number is twelve. Questions:

1. What class is Kate in?

2. 2. What class is Nancy in?

3. 3. What is Kate’s number?

4. 4. What is Nancy’s number?