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
42 − 10 = ______
17 + 20 = ______
6 × 10 = ______
77 + 10 = ______
58 − 10 = ______
54 + 20 = ______
82 − 10 = ______
5 × 10 = ______
71 − 10 = ______
71 + 10 = ______
3 × 10 = ______
2 × 10 = ______
4 × 10 = ______
9 × 10 = ______
7 × 10 = ______
41 + 20 = ______
70 + 20 = ______
83 − 10 = ______
84 + 20 = ______
55 + 10 = ______
