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
31 − 10 = ______
14 + 20 = ______
2 × 10 = ______
79 − 10 = ______
37 − 10 = ______
71 − 10 = ______
27 − 10 = ______
80 + 20 = ______
76 + 10 = ______
3 × 10 = ______
49 + 10 = ______
9 × 10 = ______
87 + 20 = ______
95 − 10 = ______
64 + 20 = ______
8 × 10 = ______
19 + 10 = ______
40 − 10 = ______
6 × 10 = ______
60 − 10 = ______
