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
41 + 10 = ______
88 + 10 = ______
40 + 20 = ______
78 + 10 = ______
6 × 10 = ______
22 + 20 = ______
23 − 10 = ______
77 − 10 = ______
8 × 10 = ______
57 + 20 = ______
31 + 10 = ______
91 − 10 = ______
81 − 10 = ______
5 × 10 = ______
9 × 10 = ______
71 + 10 = ______
29 + 20 = ______
85 + 20 = ______
42 − 10 = ______
56 + 10 = ______
