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 + 20 = ______
84 + 20 = ______
6 × 10 = ______
51 + 10 = ______
67 + 20 = ______
65 − 10 = ______
54 − 10 = ______
51 + 20 = ______
77 + 20 = ______
50 + 20 = ______
95 − 10 = ______
47 − 10 = ______
5 × 10 = ______
41 − 10 = ______
24 − 10 = ______
4 × 10 = ______
64 + 20 = ______
19 + 20 = ______
18 + 10 = ______
7 × 10 = ______
