=30-2x2.6+0.2x2.6
=30-5.2+0.52
=30+0.52-5.2
=30.52-5.2
=25.32
1.25×4.2 Simple method of fifth grade math problems = 1.25×(4+0.2)
= 1.25×4+ 1.25×0.2
=5+0.25
=5.25
Use a simple method to calculate the following question: It seems that I forgot to upload the question.
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How to divide 0.77/3.5 in the fifth grade math problem by 3.5=0.2+0.02=0.22 with a simple method?
What is the simple calculation method of 0.8 times 75.6 times 12.5? The fifth grade math problem is 0.8X75.6X 12.5.
= 75.6 times (0.8X 12.5)
=75.6X 10
=756
1. Math problems in the fifth grade of primary school (calculated by your favorite method-)14/5-3/10+2/3
=8/ 10-3/ 10+2/3
=5/ 10+2/3
= 1/2+2/3
=3/6+4/6
=7/6
2)4/3- 1/ 1 1- 10/ 1 1
=4/3-( 1/ 1 1+ 10/ 1 1)
=4/3- 1
= 1/3
How to calculate the fifth grade math problem 45×0.58 5.5× 15.8 How to calculate the fifth grade math problem 45×0.58 5.5× 15.8?
45×0.58+ 5.5× 15.8
=26. 1+86.9
= 1 13
How to solve the fifth grade mathematics 19999*6/99994 by simple formula deformation?
=(20000- 1)*6/(20000*5-6)
=(20000*5-6+20000)/(20000*5-6)
= 1+ 20000/99994
Math problems in grade five (9 1×3-89×3=6-point backward method)
A is six points more than Ding.
D: 95-3=92 points.
A: 95+3=98 points.
A fifth grade math application problem in a primary school 120÷4=30(cm? )
30÷5=6 cm
6+5= 1 1 (cm)
6×6× 1 1=396(cm? )
Is the size of this cuboid 396 cm? .