Unit 1: Addition, Subtraction, Multiplication, and Division
Introduction to Addition, Subtraction, Multiplication, and Division07:39
8Calculator Keys (1 of 2)01:59
8Calculator Keys (2 of 2)04:38
9Avoiding Errors (1 of 2)04:32
9Avoiding Errors (2 of 2)02:53
10Adding Three or More Numbers01:22
11Subtraction02:08
12Word Problems: Addition and Subtraction02:38
13Diagram Problems03:57
14Map and Balancing Checkbook Problems (1 of 3)02:46
14Map and Balancing Checkbook Problems (2 of 3)01:27
14Map and Balancing Checkbook Problems (3 of 3)04:03
15Multiplication and Estimation (1 of 2)02:37
15Multiplication and Estimation (2 of 2)02:24
16Division03:30
17Word Problems: Multiplication and Division (1 of 2)02:24
17Word Problems: Multiplication and Division (2 of 2)02:37
18Rounding off Remainders (1 of 2)03:06
18Rounding off Remainders (2 of 2)04:00
20Weights and Measures: Conversion Tables04:13
21Changing Units of Measure04:22
22Measuring Length and Converting Metric to English and English to Metric01:56
23Capacity and Time (1 of 3)02:35
23Capacity and Time (2 of 3)04:13
23Capacity and Time (3 of 3)03:02
Calculator Achievement-Division
Intrepid sea, air, and space museum: a tank’s combat weight is 102,000 pounds. How many tons does it weigh? A fighter jet can climb to 50,000 feet. How many miles high can it climb?