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
74 + 20 = ______
52 + 20 = ______
57 − 10 = ______
7 × 10 = ______
55 + 10 = ______
32 − 10 = ______
24 + 20 = ______
82 + 20 = ______
6 × 10 = ______
61 − 10 = ______
29 + 20 = ______
16 + 10 = ______
90 − 10 = ______
93 − 10 = ______
68 + 20 = ______
43 − 10 = ______
75 + 10 = ______
46 + 10 = ______
19 + 20 = ______
49 + 10 = ______
