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
7 × 10 = ______
44 + 10 = ______
81 + 20 = ______
5 × 10 = ______
23 − 10 = ______
34 + 10 = ______
61 + 10 = ______
39 − 10 = ______
6 × 10 = ______
44 − 10 = ______
71 − 10 = ______
9 × 10 = ______
40 + 20 = ______
67 + 20 = ______
31 + 20 = ______
11 + 10 = ______
78 − 10 = ______
4 × 10 = ______
91 − 10 = ______
21 + 20 = ______
