221-21×4的答案是800。
Mathematical Operations and Equations

Quiz
•
Mathematics
•
4th Grade
•
Medium

Callie Zhuo
Used 5+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Yes
No
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
计算24×8-81÷9时,乘法和除法可以同时算。
Yes
No
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(546+207)−(346+207)=(546−346)+(207+207)。
Yes
No
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
240÷12+240÷18=240÷(12+18)。
Yes
No
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下面哪张图能说明等式“4×5+6×5=(4+6)×5”成立.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
与501×98得数不相等的式子是( )。
501×100-501×2
500×98+98
501×90+501×8
500×98+1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列( )组的两个算式得数不相等。
25×(200+4)和25×200+25×4
25×174×4和25×4×174
2650-(615+650)和2650-615+650
36×11和36×10+36
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