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
86 + 10 = ______
8 × 10 = ______
66 − 10 = ______
26 + 10 = ______
29 + 20 = ______
7 × 10 = ______
77 − 10 = ______
27 + 20 = ______
4 × 10 = ______
31 − 10 = ______
91 − 10 = ______
9 × 10 = ______
21 − 10 = ______
96 − 10 = ______
51 + 10 = ______
49 + 10 = ______
46 − 10 = ______
67 − 10 = ______
78 + 20 = ______
80 + 20 = ______
