学校买来900本书，准备用8个箱子装．前7个箱子各装了105本，第8个箱子要装多少本？
口算我最棒= 26×= = = == = = 6.4÷20%= 125%×8=
直接写得数．10÷= ÷= ×= 55×÷=×2= 1÷= ÷= 0×+=
口算×15= ×2= ×= ×=÷= ÷3= ÷5= ÷=
直接写得数24×= 72×= 12÷= ÷3=0÷= 3÷= ×= ﹣×0=
画一画．（1）=（2）÷4=
= 26×
= 
= 
= 
=
= 
= 
= 6.4÷20%= 125%×8=
= 
÷
= 
= 55×
÷
=
×2= 1÷
= 
÷
= 0×
+
=
×15= 
×2= 
×
= 
×
=
÷
= 
÷3= 
÷5= 
÷
=
= 72×
= 12÷
= 
÷3=
= 3÷
= 
×
= 
×0=
=
÷4=
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