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 = ______
57 − 10 = ______
89 + 20 = ______
6 × 10 = ______
45 + 20 = ______
31 + 20 = ______
7 × 10 = ______
76 + 20 = ______
65 − 10 = ______
64 − 10 = ______
47 − 10 = ______
88 + 10 = ______
26 + 10 = ______
75 + 10 = ______
16 + 10 = ______
8 × 10 = ______
21 − 10 = ______
63 + 20 = ______
35 + 10 = ______
4 × 10 = ______
