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
23 + 20 = ______
91 − 10 = ______
6 × 10 = ______
5 × 10 = ______
18 + 10 = ______
32 + 10 = ______
78 + 20 = ______
33 + 20 = ______
61 − 10 = ______
69 + 20 = ______
35 − 10 = ______
36 − 10 = ______
84 + 20 = ______
1 × 10 = ______
7 × 10 = ______
76 − 10 = ______
95 − 10 = ______
14 + 20 = ______
2 × 10 = ______
8 × 10 = ______
