Be sure to do simple calculations!
answer
Multiply each formula by 2.
The result is1× 3+3× 5+...+97× 99+99×10/.
That is 3+ 15+...+9603+9999.
You have learned how to understand this!
The first term plus the last term multiplied by the tolerance (the difference between two numbers, such as the difference between 3 and 5 is 12, and 12 is the tolerance) is divided by two, so the result is divided by two at the beginning.
That's easy. three
Simple math operation in grade four: 500 100 Simple math operation in grade four: 25× 42× 468×125× 84× 39× 254× 25+16× 254×16× 2536. ×4 49×49+49×5 1 49×99+49 (68+32)×5 5×289×2 68+32×5 ( 125×25)×4 ( 125+ 17) ×8 25×64× 125 85×82+82× 1 5 25×97+25×3 64× 15- 14× 15 125×88 88× 102 87×99+87 79×25+25 76× 10 1-76 378+527 +73 1 67+289+33 58+39+42+6 1 36×45+36×56-36 66×93+93×33+93 99×32 46×25 36×45+36×56-36 66×93+93×33+93 97+89+ 1 1 88× 1 02 65438+ 025×88 26+47+ 174 85+47+ 15+53 8 15+49+65+ 14+ 1 1 72× 125 18+77+40+23+48 7 / kloc-0/+73+69+74+68+70+69 123 ×64+ 123×36 39×4×5 125×6×8 25×24 32×305 103× 15 78×24-24×68 49×49+49×(40+6) ×25 (68+32) ×5 68+32×5 49×99+49 36×97-58×36+6 1×36 3000÷25÷47 20÷ 15÷6 1 50÷25÷2 5000÷8÷ 125 99×23+23 56×7+45×7-7 1 25× 13×8 72÷6×(56 5438+0+ 19) 3.4+4.6-2.9 900- 178- 122 (79+2 1)÷20 1 25×72×47 28×79+2 72×79 8.59+2.57+3.43+5.47 (20+4) × 25 99× 1 1 49.62+27. 17- 19.62 1546 (546-239) (20+4) ×25 9×37+9×63 5×289×235×37+65×37 124×25-25×24 85×82+82× 15 32×(200+3)38×29+38( 125×25)×4 75×299+75(4+8)× 125 25×25
Simple Mathematical Operation in Grade Four (9466-4786)÷(720÷ 12)
=4680÷60
=78
9999+998+97+6= 10000- 1+ 1000-2+ 100-3+6
= 10000+ 1000+ 100+(6- 1-2-3)
= 1 1 100
(7×705+3×705)÷ 15 = 705 x(7+3)÷ 15
= 705 x 10 \ 15
=7050÷ 15
=470
Simple calculation of mathematics problems in the fourth grade of primary school 986×89-987×88
=986×89-986×88 -88
=986×(89-88)-88
=986-88
=986- 100+ 12
=898
Simple Calculation of Math Problem 36*46 64*54 in Grade Four
36x46+64x46
= 46 times (36+64)
=46x 100
=4600
Two simple math problems in grade four. Hello, landlord.
69+69×99
=69×( 1+99)
=6900
540÷36
=540÷9÷4
=60÷4
= 15
The fourth grade math problem 662-( 162-56)=? Simple operation of 662-( 162-56)
=662- 162+56
=500+56
=556
The simple operation of multiplying 176 by10/subtracting 17610/76.
= 176×( 10 1- 1)
= 17600
Simple math problems for the fourth grade in Daquan Elementary School and their answers: 1, 5.76+13.67+4.24+6.33 = (5.76+4.24)+(13.67+6.33) =1. 37.24+23.79-17.24 = 37.24-17.24+23.79 = 20+23.79 = 43.79 cases 3,4× 3.78× 0.25 = 4× 0.25× 3.78 =