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
84 − 10 = ______
60 − 10 = ______
76 − 10 = ______
74 + 20 = ______
65 + 20 = ______
13 + 20 = ______
5 × 10 = ______
6 × 10 = ______
3 × 10 = ______
9 × 10 = ______
25 + 20 = ______
29 + 20 = ______
73 + 20 = ______
1 × 10 = ______
52 − 10 = ______
45 + 20 = ______
80 + 10 = ______
17 + 20 = ______
7 × 10 = ______
81 − 10 = ______
