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
3 × 10 = ______
6 × 10 = ______
23 + 20 = ______
49 + 10 = ______
53 + 10 = ______
83 − 10 = ______
22 − 10 = ______
90 − 10 = ______
69 − 10 = ______
82 − 10 = ______
30 + 20 = ______
35 − 10 = ______
89 − 10 = ______
85 + 10 = ______
17 + 10 = ______
9 × 10 = ______
79 + 10 = ______
8 × 10 = ______
43 + 20 = ______
4 × 10 = ______
