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
81 + 20 = ______
55 + 10 = ______
6 × 10 = ______
8 × 10 = ______
51 + 10 = ______
77 + 20 = ______
59 − 10 = ______
41 + 20 = ______
4 × 10 = ______
11 + 10 = ______
3 × 10 = ______
94 − 10 = ______
68 − 10 = ______
58 + 20 = ______
7 × 10 = ______
2 × 10 = ______
48 + 10 = ______
89 − 10 = ______
70 + 10 = ______
14 + 20 = ______
