in the expression below,the letter A,B,C,D and E represent the number 1,2,3,4,5 in some order.
A x B + C x D + E
What is the largest possible value of the expression?
to make the total large as possible,the large digits should have place value as large as possible.that is , 9 and 8 will be in the tens positions of the two numbers.
Thẹn 3 and 2 will be in thẻ units positions.
then the sum is either 93 + 82 = 175 or 92 + 83 = 175,both with total 175
the four digits 2,3,8 and 9 are place in the boxes so that when both two-digit numbers are added,the sum is as large as possible.what is this sum?
alternative 1
in cents, 500 : 8 = 6r20 so that he buys 6 chocolates and has 20 cents left
alternative 2
multiples of 80,60, 240,320,400,480,560.from this,he can afford 6 chocolates but not 7
lee's favourite chocolates are 80c each.he has five dollars to spend. how many of these chocolates can he buy?
50 + 50 = ?
ai tick ,tick lại
