MENTAL MATH - INVEST 5 to LESSON 60 Flashcards
Count by 7’s from 7 to 84
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84
(8 x 200) + (8 x 25)
1,800
565-250
315
58 + 27
85
$1.45 + $0.99
$2.44
1/2 of $25.00
$12.50
5000/10
500
8 x 9, + 3, ÷ 3, - 1, ÷ 3, + 1, ÷ 3, ÷ 3
1
Round $31.748 to the nearest cent.
$31.75
Count by 12’s from 12 to 132
12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132
4 x 68
272
64 - 29
35
$4.64 + $0.99
$5.63
$15.00 + $7.50
$22.50
1/2 of 5
2 1/2 or as a decimal 2.5
8 x 8, - 4, ÷ 2, +2, ÷ 4, + 2, ÷ 5, x 10
20
5 x 10, + 4, ÷ 6, x 8, + 3, ÷ 3
25
Count by 12’s from 12 to 132
12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132
4 x 250
1000
368 - 150
218
250 + 99
349
$15.00 + $7.50
$22.50
1/2 of 5
2 1/2 or as a decimal 2.5
20 x 40
800
5 x 10, + 4, ÷ 6, x 8, + 3, ÷ 3
25
Alycia averaged 88% on her first three tests. What score does she need on her fourth test to have a four test average of 90%?
90% x 4 = 360%
360% - (88% x 3) = 96%
Count by 9’s from 9 to 108
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108
8 x 225
1800
256 + 34
290
250 - 99
151
$25.00 - $12.50
$12.50
Double 2 1/2
5
800/20
40
10 x 10, - 20, + 1, ÷ 9, x 5, - 1, ÷ 4
11
6 x 250
1500
736 - 400
336
375 + 99
474
$8.75 + $5.00
$13.75
1/2 of 9
4.5 or 4 1/2
30 x 30
900
8 x 8, - 1, ÷ 9, x 7 + 1, ÷ 5, x 10
100
Count by 7’s from 7 to 84
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84
8 x 325
2600
329 + 50
379
375 - 99
276
$12.50 - $5.00
$7.50
Double 3 1/2
7
600/20
30
8 x 5, + 2, ÷ 6, x 7, + 7, ÷ 8, x 4, ÷7
4
Half of a gallon is a half gallon. Half of a half gallon is a quart. Half of a quart is a pint. Half of a pint is a cup.
How many cups of water equals a gallon of water?
1 pint = 2 cups
1 quart = 2 pints = 4 cups
1 half gallon = 2 quarts = 8 cups
1 gallon = 2 half gallons = 16 cups
How many cups are in a gallon?
16 cups
How many pints are in a gallon?
8 pints
How many quarts are in a gallon?
4 quarts
Count up and down by 25’s between 25 and 300
25, 50, 75, 100, 125, 150, 175, 200, 225, 250, 300
8 x 250
2000
462 - 350
112
150 + 49
199
$3.75 + $4.50
$8.25
1/2 of 15
7.5
30 x 40
1200
10 x 8, + 1, ÷ 9, x 3, + 1, ÷ 4, x 6, - 2, ÷ 5
8
Count by 12’s from 12 to 144
12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144
8 x 425
3400
465 + 250
715
150 - 49
101
$9.75 - $3.50
$6.25
Double 4 1/2
9
600/30
20
2 x 2, x 2, x 2, x 2, x 2, ÷ 8, ÷ 8
1
Count up and down by 1/8’s between 1/8 and 2.
1/8, 2/8, 3/8, 4/8, 5/8, 6/8, 7/8, 1, 1 1/8, 1 2/8, 1 3/8, 1 4/8, 1 5/8, 1 6/8, 1 7/8, 2
2 x 75
150
315 - 150
165
250 + 199
449
$7.50 + $12.50
$20.00
1/2 of 25
12.5
20 x 50
1000
10 x 10, - 1, ÷ 11, x 8, + 3, ÷ 3, ÷ 5
5
Count up and down by 3’s between 3 and 36.
3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36
4 x 75
300
279 + 350
629
250 - 199
51
$15.00 - $7.75
$7.25
Double $1.50
$3.00
800/40
20
4 x 12, ÷ 6, x 8, - 4, ÷ 6, x 3, ÷ 2
15
Count by 7’s from 7 to 84
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84
2 x 750
1500
429 - 250
179
750 + 199
949
$9.50 + $1.75
$11.25
1/2 of $5
$2.50
40 x 50
2000
12 x 3, + 4, x 2, + 20, ÷ 10, x 5, ÷ 2
25
