31x19=
(30+1)(20-1) = 600 + 20 - 30 - 1 = 589
hi don't understand this i need help
16times 12
23×17
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To calculate the product of 31 and 19, you can use multiplication.
Here's a step-by-step explanation:
1. Multiply the ones digit: Multiply 9 (the ones digit of 19) by 31. The result is 279.
- 9 x 31 = 279
2. Multiply the tens digit: Multiply 1 (the tens digit of 19) by 31, but include a placeholder of zero at the end. The result is 310.
- 1 x 31 = 31 (add a zero to get 310)
3. Add the two results together to find the final product: Add 279 (from step 1) and 310 (from step 2).
- 279 + 310 = 589
Therefore, 31 multiplied by 19 equals 589.