Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
47 − 10 = ______
53 − 10 = ______
41 + 20 = ______
49 + 20 = ______
67 − 10 = ______
1 × 10 = ______
67 + 20 = ______
13 + 20 = ______
3 × 10 = ______
69 − 10 = ______
7 × 10 = ______
8 × 10 = ______
66 − 10 = ______
36 + 20 = ______
35 + 20 = ______
56 + 20 = ______
82 + 20 = ______
40 + 10 = ______
52 + 20 = ______
91 − 10 = ______
