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
72 + 20 = ______
57 − 10 = ______
3 × 10 = ______
41 − 10 = ______
63 + 10 = ______
52 + 10 = ______
42 − 10 = ______
73 + 20 = ______
83 − 10 = ______
2 × 10 = ______
25 + 10 = ______
7 × 10 = ______
9 × 10 = ______
23 − 10 = ______
8 × 10 = ______
41 + 20 = ______
50 + 10 = ______
42 + 20 = ______
6 × 10 = ______
77 + 10 = ______
