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
6 × 10 = ______
54 + 20 = ______
8 × 10 = ______
3 × 10 = ______
85 − 10 = ______
31 − 10 = ______
93 − 10 = ______
89 + 20 = ______
79 + 20 = ______
86 + 10 = ______
98 − 10 = ______
30 + 20 = ______
84 + 10 = ______
24 − 10 = ______
88 + 20 = ______
56 − 10 = ______
50 − 10 = ______
64 + 10 = ______
29 + 20 = ______
63 + 10 = ______
