Question A: Addition without recourse to the top order, with two portions of two numbers: 35 + 42. Question B: Addition with recourse to the top order, with two portions, being the first with three numbers and the second with four numbers: 278 + 3456. Question C: Subtraction with recourse to the top order in the order of tens with three numbers in the minuend and in the subtrahend: 839 − 454. Question D: Subtraction with recourse to the order of the tens and of the units, with three numbers in the minuend and in the subtrahend: 942 − 583. Question E: Multiplication by 1 with three numbers in the multiplier: 121 × 1. Question F: Multiplication by zero and with three numbers in the multiplier: 784 × 0. Question G: Multiplication of one number in the multiplier by three numbers in the multiplicand: 743 × 2. Question H: Multiplication of two numbers in the multiplier and in the multiplicand: 45 × 16. Question I: Division of 100 by 2. Question J: Division of a number with three digits in the dividend by one digit in the divider.