By 25
25 x 32
Step 1: 32/4 = 8
Step 2: 8 x 100 = 800
Answer: 800
50 x 79
Step 1: 79/2 = 39.5
Step 2: 39.5 x 100 = 3950
Answer: 3950
5 x 6 x 4
Step 2: 30 x 4 = 120
Answer: 120
101 x 57
5757
11 x 63
Step 1: __ 3
Step 2: 6 + 3 = 9
__93
Step 3: Add the tens digit of the number
Answer: 693
25 x 40
Step 1: 40/4 = 10
Step 2: 10 x 100 = 1000
Answer: 1000
50 x 68
Step 1: 68/2 = 34
Step 2: 34 x 100 = 3400
Answer: 3400
4 x 7 x 5
Step 1: 5 x 7 = 35
Step 2: 35 x 4 = 140
Answer: 140
99 x 101
9,999
11 x 95
Step 1: ___5
Step 2: 9 + 5 = 14
___45
Step 3: 9 + 1 = 10 (the one is carried over from the 14)
Answer: 1045
525/25
Step 1: 525 x 4 = 2100
Step 2: 2100/100 = 21
Answer: 21
234 x 50
Step 1: 234/2 = 117
Step 2: 117 x 100 = 11700
Answer: 11,700
5 x 9 x 8
Step 1: 5 x 9 = 45
Step 2: 45 x 8 = 360
Answer: 360
202 x 42
(200 x 42) + (2 x 42) = 8,484
Answer: 8,484
264/11
Step 1: Look at the first and last digits being divided by eleven 2_4
Step 2: check to see if added they equal the middle number. 2 + 4 = 6
Step 3: If so remove the middle number to obtain your answer.
Answer:24
25 x 432
Step 1: 432/4 = 108
Step 2: 108 x 100 = 10800
Answer 10,800
1,755/50
Step 1: 1,755 x 2 = 3,510
Step 2: 3,510/100 = 35.1
Answer:35.1
3 x 6 x 8
Step 1: 6 x 8 = 48
Step 2: 48 x 3 = 144
Answer: 144
32 x 303
(300 x 32) + (3 x 32) = 9,696
Answer: 9,696
18 x 12
18 x 12 = (18 x 11) + (18 x 1)
18 x 11 = 198
18 x 1 = 18
198 + 18 = 216
Answer: 216
3,060/25
Step 1: 3060 x 4 = 12,240
Step 2: 12,240/100 = 122.4
Answer: 122.4
7,950/50
Step 1: 7,950 x 2 = 15,900
Step 2: 15,900/100 = 159
Answer: 159
7 x 8 x 9
Step 1: 7 x 9 = 63
Step 2: 63 x 8 = 504
(8x3=24[carry 2], 6x8=48[plus the carried 2]
Answer: 504
505 x 19
(500 x 19) + (5 x 19) = 9,595
Answer: 9,595
543 x 11
Step 1: ___3
Step 2: 3 + 4 = 7
___73
Step 3: 5 + 4 = 9
_973
Step 4: Add the hundreds digit to the beginning of the answer.
Answer: 5, 973