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
9 × 10 = ______
89 + 20 = ______
65 − 10 = ______
13 + 20 = ______
79 − 10 = ______
63 + 10 = ______
8 × 10 = ______
31 + 20 = ______
26 − 10 = ______
62 + 10 = ______
1 × 10 = ______
92 − 10 = ______
52 + 20 = ______
5 × 10 = ______
27 + 10 = ______
16 + 10 = ______
99 − 10 = ______
31 − 10 = ______
41 + 10 = ______
81 + 20 = ______
