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 = ______
91 − 10 = ______
83 − 10 = ______
81 − 10 = ______
7 × 10 = ______
30 − 10 = ______
87 + 10 = ______
88 + 20 = ______
4 × 10 = ______
78 + 10 = ______
76 + 20 = ______
8 × 10 = ______
21 − 10 = ______
3 × 10 = ______
67 + 10 = ______
6 × 10 = ______
87 − 10 = ______
1 × 10 = ______
25 − 10 = ______
35 + 20 = ______
