Level One > Number and Algebra
The Thousands Book
Keywords:
Achievement Objectives:
Specific Learning Outcomes:
Solve addition and subtraction problems using groups of ten.
Description of mathematics:
Number Framework Stage 4
Required Resource Materials:
Thousands book (Material Master 4-7).
Activity:
Using Materials
Problem: Add 20 to 55 using the first sheet in the thousands book. Locate 55, then drop down 2 squares to 75. Record 55 + 20 = 75.
Examples to add/subtract ones by going right/left and add/subtract tens by going down/up: 35 + 30, 65 – 4, 65 + 3, 75 – 40, 45 + 20, 95 – 5, 33 + 6, 75 - 30....
Examples Use the thousands book. Extend the number sizes up to 1000.
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