量一量,填一填.∠1=______,∠2=______.
巧填单位名称.1______-59______=1______;1______-9______=1______;1___
125×(4+8)=______×______+______×______.
填质数:21=______+______=______×______=______-______.
27046=2×______+7×______+4×______+6×______.
3.76°=______度 ______分 ______秒.
填上适当的质数.24=______+______=______+______=______+______.
0.87×99+0.87=______×______.
1周角=______平角=______直角.
分解因式:2ax+4bx-ay-2by=(______)+(______)=(______)(______).
1米=______分米,1分米=______厘米,1米=______厘米.
1平角=______直角1周角=______平角=______直角.
(1)34.37°=______度______分______秒. (2)3