百数 meaning in Chinese

hundred

There ' s hundreds of families , millions of families
数百数百万的家庭
First i changed 16 into 4 4 , because the product of 4 and 25 is hundreds , it ' s easier to calculate
生： 25 16先把16分解成4 4 ，因为4和25相乘也能凑成整百数，这样计算就简便。
S : first i changed 16 into 4 4 , because the product of 4 and 25 is hundreds , it ' s easier to calculate
生： 25 16先把16分解成4 4 ，因为4和25相乘也能凑成整百数，这样计算就简便。
Teaching difficult points : identify which tens or hundreds the number being added or subtracted is close to and how much more or less has been added or subtracted
难点：明确要加的数或要减的数是接近哪个整十、整百数；加上或减去整百、整十数，多加了或多减了多少。
Because shou mining early , that the old " tin hang , sump , mountains , " refers to the end of tin mine , water jian , the cave mining ores , in 1500 after the mining , the emergence of a variety of as many as 100 scores
因为寿山矿区开采得早，旧说的“田坑、水坑、山坑” ，就是指在此矿区的田底、水涧、山洞开采的矿石，经过1500年的采掘，涌现的品种达百数十种之多。