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
55 + 20 = ______
7 × 10 = ______
89 − 10 = ______
6 × 10 = ______
9 × 10 = ______
67 − 10 = ______
50 + 20 = ______
86 + 20 = ______
25 + 20 = ______
74 − 10 = ______
25 + 10 = ______
71 − 10 = ______
30 + 20 = ______
18 + 10 = ______
99 − 10 = ______
83 − 10 = ______
81 − 10 = ______
21 − 10 = ______
69 + 10 = ______
64 + 20 = ______
