7th+Hour+Math

=**__+298__**= ||= =**568**= =**__+399__**= ||= =**386**= =**__+297__**= ||=  ||= =**546**= =**__+399__**= ||=   ||= =**748**= =**__+198__**= || =**427**= =**__+395__**= || =**865**= =**__+799__**= || =**768**= =**__+497__**= ||=   ||=   ||=   ||=   ||=   ||=   || You don't need to subtract 1 because you moved one from 568 to 399. ||  ||   || 400+546=946-1=945 ||   ||   ||   ||   ||   ||   || **//you don't round 546 to 550//** ||  ||   ||   ||   ||   ||   ||
 * = =**345**=
 * 300+345=645-2=643 || 567+400=967-1=966
 * ||  ||   ||   || 550+400=950+5=955

=**__-298__**= ||= =**568**= =**__-399__**= ||= =**386**= =**__-297__**= ||=  ||= =**546**= =**__-399__**= ||=   ||= =**748**= =**__-198__**= || =**427**= =**__-395__**= || =**865**= =**__-799__**= || =**768**= =**__-497__**= ||   || ==180==
 * = =**345**=

__-90__
|| == == ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   || you get 90 so 90 is the answer for 180 - 90 = 90. ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   || 18-9=__add 0__ ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   || you - 18 and 9 and get 9 if add 0

Change the problem to make it easier to multiply. For example, you can multiply one number by two if you multiply the other by 1/2. Try making your own and solving it in the top row. =**__x 5__**= ||= =**28**= =**__x 5__**= ||= =**24**= =**__x 5__**= ||=  ||= =**148**= =**__x 5__**= ||=  ||= =**248**= =**__x 50__**= || =**128**= =**__x 50__**= || =**468**= =**__x 500__**= ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   || 5x100=500 500+240=740 ||  ||   ||   || 400x500=200,000 500x68=3,400 200,000+3,400=234,000 ||  ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||
 * = =**16**=
 * ||  ||   ||   || 5 x 48=240
 * ||  ||   ||   ||   ||   ||   ||   || you could times 468 by 5 and add the 0's later! ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||   ||

Multiply by Splitting
When one number of a multiplication pair has two digits, try splitting that number into two parts by dividing it by 2. Example: 9 x 12 Split 12 into two parts: 12=6x2 Instead of 9x12 (9x6x2) think 9 x 6 and then double it. 9x6=54 Double 54 and you get 108.

1. 8 x 16

2. 5 x 22

3. 6 x 18

4. 7 x 14

5. 9 x 16

6. 12 x 24