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 + 20 = ______
83 + 10 = ______
89 + 20 = ______
25 + 10 = ______
59 − 10 = ______
56 − 10 = ______
89 + 10 = ______
95 − 10 = ______
32 + 10 = ______
6 × 10 = ______
90 − 10 = ______
13 + 10 = ______
58 + 10 = ______
2 × 10 = ______
58 + 20 = ______
63 − 10 = ______
80 − 10 = ______
51 + 20 = ______
5 × 10 = ______
55 − 10 = ______
