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
29 + 20 = ______
12 + 20 = ______
4 × 10 = ______
23 − 10 = ______
72 + 20 = ______
61 + 20 = ______
35 − 10 = ______
55 + 20 = ______
8 × 10 = ______
44 − 10 = ______
51 + 10 = ______
22 + 10 = ______
96 − 10 = ______
88 + 20 = ______
78 − 10 = ______
35 + 20 = ______
46 + 10 = ______
81 + 10 = ______
51 − 10 = ______
82 − 10 = ______
