Current location - Training Enrollment Network - Mathematics courses - The math problems in the sixth grade math book are all calculated by simple methods, and all the laws are calculated.
The math problems in the sixth grade math book are all calculated by simple methods, and all the laws are calculated.
1. Two thirds times three times a quarter equals one half (multiplication commutation law).
2.8/9 times 27+ 4/27 times 27 equals 28 (multiplication table)
3.{86+ 1} times three-sixths.
Equal to 86 times three 86+1 times three 86 equals three and three 86 (multiplication table)