Choose the greatest number using the digits, 2, 6, 1 and 5 only once.

Choose the standard form of 300+7+5000+20 = _______

35 - ______ = 35

_____+1053 = 1053

When we add 100 to 4358, the digit at _____place increase by one ?

One more than the smallest 4-digit number is_____.

The predecessor of 4306 is ______.

14 × 8 = ______

17 × 4 = __________