Mental math week 3:
Fundamentals
Pre-Algebra
Monday:
6+3
Algebra 1
Monday:
Monday:
=9
Five less than 12 is
=7
Times 5
= 45
Square that
= 49
Double that
= 90
Times 10
= 490
Times 10 again
= 4900
Divided by 10 = 9
The product of 6 and this number is 72
= 12
Tuesday:
Tuesday:
= 11
Twice the sum of 4 and 5
= 18
Times 4
= 44
Times 10
= 180
Half of that
= 22
1/3 of that
= 60
Times 3
= 66
1/10 of that
=6
8+5
= 13
Double that
= 26
Increased by 4 = 30
Half of that
= 15
Thursday:
9+5
= 14
Half of that
=7
Times 6
= 42
Double that
= 84
Half of that
= 72
1/9 of that
=8
The quotient of 56 and this number is 7
=8
The cube root
=2
That to the 4th power
= 16
1/4 of that
=4
Wednesday:
Wednesday:
3 less than the product of 2 and 4 is
The difference of this number and
=5
12 is 4
= 16
Increased by 13
= 18
Its square root
=4
1/2 of that
=9
Its square root
=2
Square that
= 81
What’s its reciprocal =1/2
Thursday:
Thursday:
Twice the difference of 8 and 5 is
The sum of this number and 8 is 23
=6
= 15
Square that
= 36
1/5 of that
=3
Times 10
= 360
Cube that
= 27
1/2 of that
= 180
1/9 of that
=3
Friday:
Friday:
= 144
Tuesday:
9+2
Wednesday:
Square that
Friday:
9+6
= 15
9 less than 20 is
= 11
Double that
= 30
Increased by 14
= 25
Times 10
= 300
1/5 of that
=5
Half of that
= 150
1/5 of that
=1
The difference of 21 and this number is 13
=8
Square that
= 64
Half of that
= 32
1/8 of that
=4