Primary School Mathematics Olympiad Enhancement Training Topic Bank (Revised Edition)

Author: China Educational Society Mathematics Education Research and Development Center
Publisher:
Publish Date: 2000-01-01
Features: Part of the Basic Knowledge Section - Arithmetic Practice Problems 1
1. Fill in the blanks (5 points per question, total 75 points)
1. Calculate: 3.48 - 1.79 = _______.
2. Calculate: 2273 - 655 - 348 = _______.
3. Calculate: 599996 + 49997 + 3998 + 407 + 89 = _______.
4. Calculate: 100 + 99 - 98 - 97 + 96 + 95 - 94 - 93 + ... + 8 + 7 - 6 - 5 + 4 + 3 - 2 - 1 = __________.