5 ones=...., 2 tens=...., 2 ones, 3 tens=....., 79=......ones,.....tens, 54= .....+......., The place value of 2 in 23 is..., The place value of 4 in 84 is..., 23 (>,<,=) 2 tens,3 ones, 17=......tens,.....ones

Maths

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？