小学五年级数学口算1500题

300÷60= 64÷2 = 64÷4 = 50÷5 = 60÷8 = 96÷4 = 90÷6 = 400+80 = 400-80 = 40×80 = 400÷80 = 48÷16 = 96÷24 =