多位数加法

(10 to 20) + (10 to 20)

(10 to 30) + (10 to 20)

(10 to 40) + (10 to 20)

(10 to 50) + (10 to 20)

(10 to 60) + (10 to 20)

(10 to 70) + (10 to 20)

(10 to 80) + (10 to 20)

(10 to 90) + (10 to 20)

(10 to 100) + (10 to 20)

多位数减法

数字 -(10 to 99) = (10 to 20)

数字 -(10 to 99) = (10 to 30)

数字 -(10 to 99) = (10 to 40)

数字 -(10 to 99) = (10 to 50)

数字 -(10 to 99) = (10 to 60)

数字 -(10 to 99) = (10 to 70)

数字 -(10 to 99) = (10 to 80)

数字 -(10 to 99) = (10 to 90)

数字 mber -(10 to 99) = (10 to 100)

数字 -(100 to 999) = (10 to 100)

乘法表

(1 to 9) x 1

(1 to 9) x 2

(1 to 9) x (1 to 2)

(1 to 9) x 3

(1 to 9) x (1 to 3)

(1 to 9) x 4

(1 to 9) x (1 to 4)

(1 to 9) x 5

(1 to 9) x (1 to 5)

(1 to 9) x 6

(1 to 9) x (1 to 6)

(1 to 9) x 7

(1 to 9) x (1 to 7)

(1 to 9) x 8

(1 to 9) x (1 to 8)

(1 to 9) x 9

(2 to 9) x (2 to 9)

简单除法

2 位数除以 2

2 位数除以 (2 or 3)

2 位数除以 4

2 位数除以 (2, 3,4)

2 位数除以 5

2 位数除以 (2,3,4,5)

2 位数除以 6

2 位数除以 (2,3,4,5,6)

2 位数除以 7

2 位数除以 (2,3,4,5,6,7)

2 位数除以 8

2 位数除以 (2,3,4,5,6,7,8)

2 位数除以 9

2 位数除以 (2,3,4,5,6,7,8,9)

读钟

从时钟读取小时

从时钟读取分钟

读时钟

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