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
26 − 10 = ______
99 − 10 = ______
19 + 20 = ______
1 × 10 = ______
55 + 20 = ______
7 × 10 = ______
9 × 10 = ______
67 + 20 = ______
61 − 10 = ______
46 + 10 = ______
89 − 10 = ______
16 + 20 = ______
87 + 20 = ______
82 − 10 = ______
36 + 10 = ______
6 × 10 = ______
90 − 10 = ______
52 + 10 = ______
5 × 10 = ______
74 + 20 = ______
