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
52 + 20 = ______
6 × 10 = ______
77 + 20 = ______
58 + 20 = ______
84 − 10 = ______
55 − 10 = ______
89 + 10 = ______
8 × 10 = ______
41 − 10 = ______
3 × 10 = ______
86 + 20 = ______
21 + 10 = ______
24 − 10 = ______
7 × 10 = ______
41 + 10 = ______
57 + 10 = ______
30 + 20 = ______
30 − 10 = ______
5 × 10 = ______
26 + 10 = ______
