Subtraction in Parts
45 - 27
45 - 20 = 25
25 - 7 = 18
62 x 5 =
60 x 5 = 300
2 x 5 = 10
300 + 10 + 310
6 x 40 =
240
6300 ÷ 7 =
900
50/100 - 25/100 =
25/100
80 - 49
80 - 40 = 40
40 - 9 = 31
8 x 53 =
50 x 8 = 400
3 x 8 = 24
400 + 24 = 424
5 x 400 =
2000
2500 ÷ 5 =
500
How many hours is it from 7 AM to 10 PM?
15 hours
83 - 35 =
83 - 30 = 53
53 - 5 = 48
3 x 126 =
100 x 3 = 300
20 x 3 = 60
6 x 3 = 18
300 + 60 + 18 = 378
70 x 400 =
28000
15000 ÷ 15
1000
What is the capital of Washington?
Olympia
400 - 150 =
400 - 100 = 300
300 - 50 = 250
4 x 825 =
800 x 4 = 3200
20 x 4 = 80
5 x 4 = 20
3200 + 80 + 20 = 3300
8000 x 60 =
480,000
250000 ÷ 5 =
50000
What is the third planet from the Sun?
Earth
900 - 355 =
900 - 300 = 600
600 - 50 = 550
550 - 5 = 545
7 x 450 =
400 x 7 = 2800
50 x 7 = 350
2800 + 350 = 3150
3000 x 700 =
2,100,000
100,000 ÷ 10 =
10,000
Sam leaves Seattle at 6 AM. He drives for 6 hours then stops for lunch. His lunch break is 1.5 hours. He drives for 4 more hours. He stops at a rest area to take a nap. His nap is 1.5 hours. He wakes up and drives for 3.5 more hours and arrives at his destination. What time did he arrive?
10:30 PM