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 = ______
58 + 10 = ______
38 + 20 = ______
59 + 20 = ______
90 − 10 = ______
43 + 20 = ______
77 − 10 = ______
2 × 10 = ______
86 + 20 = ______
3 × 10 = ______
86 + 10 = ______
75 + 10 = ______
48 + 20 = ______
29 + 10 = ______
1 × 10 = ______
51 − 10 = ______
88 + 10 = ______
41 + 20 = ______
5 × 10 = ______
63 − 10 = ______
