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1) Find 32 x 46, multiplying from right to left
2) Find 36 x 42, mentally from left to right
3) What is the total obtained in the crosswise step in finding 38 x 57?
4) Use the vertical/crosswise pattern to find (3x + 4)(2x + 3)
5) Given 34 x 56 = 1904 what will be the corresponding digit sum check?
6) Divide 3431 by 73 by reversing the vertical/crosswise pattern
7) Use the vertical/crosswise pattern to find the remainder when 3819 is divided by 53.
8) What are the two carry figures involved in finding 27 x 38 from right to left?
9) Divide (8x^2 + 30x + 27) by (4x + 9) by using the vertical/crosswise pattern in reverse
10) Use the base method to find 89 x 92 mentally
11) Use the base method to find 132 x 104 mentally
12) Use the base method to find 107 x 97
13) In using a base of 100 to find 78 x 79 what is the value of the carry figure from the right side to the left side?
14) Find 206 x 109 using a base of 100, and doubling & halving
15) Find 306 x 309 using a base of 300
16) Which of these can be used to find 45 x 48 (more than one answer here):
17) Which equation corresponds to: “I think of a number, and double it and add 5 and get 19”
18) Solve 7x – 8 = 34 mentally
19) Solve 5x – 8 = 2x + 4 mentally