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
83 + 10 = ______
57 + 20 = ______
1 × 10 = ______
5 × 10 = ______
56 − 10 = ______
58 − 10 = ______
84 + 20 = ______
88 − 10 = ______
50 − 10 = ______
15 + 10 = ______
9 × 10 = ______
7 × 10 = ______
54 + 20 = ______
89 + 10 = ______
67 − 10 = ______
73 − 10 = ______
64 − 10 = ______
87 + 20 = ______
65 + 10 = ______
77 − 10 = ______
