toán tiếng anh lớp 6

Calculate(-5+2).(6-|7-9|)=....

• 24

• -24

• 30

• -12

A prime number can be described as.....

• always an even number

• a number with more than 2 different factors

• a number with exactly 2 different factor

• always an odd number

find the sum of the integer number from -2020 to 2021

P is a natural number that is written by 2 digit 5. The remainder when P is divided by 14 is.....

it takes Mary 1 hours to clean the house. It takes John 2 hours to clean the same house. How long will it take them to clean the house together?

Fill in the missing number that completes the sequence:-1;0;3;8;15;24;...;48;63;80

A frog has fallen into ditch which is 15m deep. Each day the frog jump 3m and then fall back by 1m. In how many days will the frog reach the top of the ditch?

M is the sum of the prime numbers between 8 and 16. The greatest prime factor of M is....

If 4*8=144; 2*2=16; 6*7=169; 7*5=....

• 12

• 114

• 144

• 2

the sum of the values of integer x satisfying |x-3|<2 is....