Đâu là công thức của tính chất kết hợp của phép cộng:
Các phép tính công, trừ, nhân, chia

Quiz
•
Mathematics
•
5th Grade
•
Medium
lananh tran
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A + (B + C) = (A + B) - C
A + (B + C) = (A + B) + C
A + B + C = (A – B) + C
A + B - C = (A + B) + C
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhận định sau đúng hay sai: a x b = b x a
Đúng
Sai
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Tính bằng cách thuận tiện: 13 x 5 x 2 = ...
10
120
65
130
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tính: 38,04 x 10 =
0,3804
3,804
380,4
3804
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tính: 23,56 + 123,7 =
147,26
35,93
14726
3543
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Tính: 50,81 - 19,256 =
32,554
30,554
31,554
31,454
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
22,7 : 0,01 =
0,227
2,27
227
2270
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