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
42 + 10 = ______
62 + 20 = ______
54 + 10 = ______
1 × 10 = ______
73 − 10 = ______
20 + 10 = ______
56 − 10 = ______
23 − 10 = ______
75 + 20 = ______
85 + 10 = ______
2 × 10 = ______
51 − 10 = ______
37 + 10 = ______
65 + 10 = ______
31 − 10 = ______
82 + 20 = ______
9 × 10 = ______
41 + 10 = ______
40 − 10 = ______
29 + 20 = ______
