Multiply by 25
What are the steps to multiply by 25 in your head?
Possible answer Multiply by 100 and divide by 4 (or cut in 1/2 twice).
What are the steps to multiply by 11 in your head?
Possible answers (there could be others) Multiply by 10 and add the number.
What are the steps to multiply by 50 in your head?
Possible answer Multiply by 100 and cut in 1/2 (divide by 2)
What are the steps to multiply by 99 in your head?
Possible answer Multiply by 100 and subtract the number.
What are the steps to multiply by 12 in your head?
Possible answer Multiply by 10 and add twice the number.
5 x 25 = ?
125
Multiply carefully! 11 x 18 = ?
198
Multiply carefully! 50 x 25 = ?
1250
Multiply carefully! 99 x 11 = ?
1089
Multiply carefully! 12 x 45 = ?
540
Multiply carefully! 27 x 25 = ?
675
Multiply carefully! 11 x 23 = ?
253
Multiply carefully! 50 x 52 = ?
2600
Multiply carefully! 99 x 23 = ?
2277
Multiply carefully! 12 x 23 = ?
276
Multiply carefully! 9 x 25 = ?
225
Multiply carefully! 11 x 99 = ?
1089
Multiply carefully! 50 x 72 = ?
Multiply carefully! 99 x 41 = ?
4059
Multiply carefully! 12 x 80 = ?
960
252 = ?
14
112 = ?
121
502 = ?
2500
Multiply carefully! 99 x 63 = ?
6237
122 = ?
144