+ 
="________" 30 
="________" 0.48÷0.6="________" 
﹣ =________
÷2="________" 3.5﹣3.05="________" 
÷ 
="________" 7 （ 
+ 
）=________
="________" 1﹣ 
="________" 
÷ 
="________" 4﹣ 
﹣ =________12="________" 
="________" 3.27+1.83="________" 
+ 
+ =________ 
÷ 
= 
÷3= 
× 
× 
=×9× = 
÷2=" 5÷" ﹣ ÷5=
=" 6×" 
= （1.6+3.2）×0.125= 
=" 9×" 
÷9× = 1﹣ 
+ 
= = |  ÷  = | 8﹣  = | 6×  = |
 ÷  = |  ﹣ = |  × = |  = |
 ÷3= |  = | +  ×  = |  ×4×  = |
 ×0= | ÷  = |  ×75%= |  = |
=
÷ ﹣ = 
，现在胡夫金字塔大约高多少米？
﹣ 
﹣ 
﹣ 
﹣ 
．  ﹣ =________ |  +  =________ |  ÷2=________ | 8÷  =________ |
3.6×  =________ | 2.4÷ =________ |  ÷  =________ |  ×  =________ |
和3米的
同样长．（判断对错）．
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