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
89 + 20 = ______
36 − 10 = ______
14 + 20 = ______
74 + 10 = ______
41 − 10 = ______
48 − 10 = ______
50 − 10 = ______
8 × 10 = ______
52 + 20 = ______
66 + 20 = ______
82 − 10 = ______
68 + 10 = ______
9 × 10 = ______
7 × 10 = ______
38 + 10 = ______
2 × 10 = ______
86 + 20 = ______
27 + 20 = ______
1 × 10 = ______
61 + 20 = ______
