一年级上册20以内口算每天练习
3 + 6 = 9 - 2 = 10 + 0 = 7 - 3 = 0。
8 + 2 = 5 - 5 = 13 - 10 = 10 + 5
15 - 5 = 12 - 2 = 9 + 9 = 8 - 8
14 - 4 = 11 - 1 = 2 + 8 = 16 - 6
10()3 = 7()2 = 10 5()7 = 12
6()4 = 10 ()6 = 10 16()4 = 20
谁算得又准又快?
7 + 7 = 9 + 5 = 8 + 6 = 5 - 2
10 - 6 = 4 + 9 = 13 - 3 = 6 + 8 = 15 - 7
一年级上册20以内口算每天练习
3 + 6 = 9 - 2 = 10 + 0 = 7 - 3 = 0。
8 + 2 = 5 - 5 = 13 - 10 = 10 + 5
15 - 5 = 12 - 2 = 9 + 9 = 8 - 8
14 - 4 = 11 - 1 = 2 + 8 = 16 - 6
10()3 = 7()2 = 10 5()7 = 12
6()4 = 10 ()6 = 10 16()4 = 20
谁算得又准又快?
7 + 7 = 9 + 5 = 8 + 6 = 5 - 2
10 - 6 = 4 + 9 = 13 - 3 = 6 + 8 = 15 - 7