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
9 × 10 = ______
85 + 10 = ______
7 × 10 = ______
27 + 20 = ______
82 + 10 = ______
57 + 20 = ______
23 + 20 = ______
49 − 10 = ______
3 × 10 = ______
83 + 20 = ______
29 + 10 = ______
32 − 10 = ______
8 × 10 = ______
33 − 10 = ______
4 × 10 = ______
34 − 10 = ______
31 + 10 = ______
34 + 10 = ______
50 + 10 = ______
75 + 20 = ______
