298+376简便计算
298+376 怎么简便计算 -
原式=300+376-2 =676-2 =674
298*376 =(300-2)*376 =112800-752 =112048
原式=300+376-2 =676-2 =674
298*376 =(300-2)*376 =112800-752 =112048
(298+2)(376-2)674
376-298 = 376-300+2 = 76+2 = 78
376-298和25X84、125X16的简便计算 -
1. 376-298=376-300+2=78 2. 25×84=25×4×21=100×21=2100 3. 125×16=125×8×2=1000×2=2000 4. 258×399=258×(400-1)258×400-258=102942 5. 735-498=735-500+2=237
=300+376-11 =676-11 =665
376-299 简便计算 -
原式=376-(300-1)376-300+1 =76+1 =77 供参考。
284+376-399 =284+376-(400-1)=284+376-400+1 =660-400+1 =260+1 =261
284+376-399的简便计算 -
284+376-399 =660-400+1 =261
最佳答案: =300+376-11 =676-11 =665最佳答案: =300+376-11 =676-11 =665最佳答案: =300+376-11 =676-11 =665