1003118610
Level:
A
Which of the following numbers is the smallest?
\( 1.23\cdot10^{-5} \)
\( 25.36\cdot10^{-4} \)
\( 0.00000013\cdot10^5 \)
\( \frac{21}{0.7\cdot10^5} \)
Elementary arithmetics
1003118609
Level:
A
The number \( 350 \) millions is equal to:
\( 3.5\cdot10^8 \)
\( 3.5\cdot10^6 \)
\( 3.5\cdot10^9 \)
\( 3.5\cdot10^7 \)
1003034110
Level:
A
Calculating \(2\cdot3-(4\cdot15-36)\) we get:
\( -18 \)
\( 18 \)
\( 90 \)
\( -90 \)
1003034109
Level:
A
Give the result of \( 3+5-2\cdot3+\left(2^3-6\right):1\).
\( 4 \)
\( 20 \)
\( 14 \)
\( 2 \)
1003034105
Level:
A
Evaluate the expression \( 0.864:0.24 \).
\( 3.6 \)
\( 36 \)
\( 0.36 \)
\( 0.624 \)
1003034103
Level:
A
The result of subtraction \( 0.36-3.21 \) is:
\( -2.85 \)
\( 2.85 \)
\( 3.57 \)
\( 3.15 \)
1003034102
Level:
A
Evaluating the expression \( \frac27 \cdot 3 \) we get:
\( \frac67 \)
\( \frac57 \)
\( \frac6{21} \)
\( \frac2{21} \)
1003034101
Level:
A
Evaluating the expression \( \frac12 + \frac23 \) we get:
\( \frac76 \)
\( \frac35 \)
\( \frac7{12} \)
\( \frac36 \)
9000115605
Level:
B
Complete the following statement: „The number is divisible by six if and only if ...”
it is divisible by both two and three.
the sum of its digits is divisible by both two and three.
the sum of its digits is even and the last digit of this number is
\(3\).
the last digit of this number is \(6\).
9000115606
Level:
B
Complete the following statement: „The number is divisible by eight if and only if ...”
the number constituted from the last three digits is divisible by eight.
the sum of its digits is divisible by eight.
it is divisible by both two and four.
the number constituted from the last two digits is divisible by eight.